;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2013, 2014, 2015, 2016 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2014, 2015 Mark H Weaver <mhw@netris.org>
;;; Copyright © 2014 Ian Denhardt <ian@zenhack.net>
;;; Copyright © 2014 Sou Bunnbu <iyzsong@gmail.com>
;;; Copyright © 2014 Julien Lepiller <julien@lepiller.eu>
;;; Copyright © 2015 Taylan Ulrich Bayırlı/Kammer <taylanbayirli@gmail.com>
;;; Copyright © 2015 Paul van der Walt <paul@denknerd.org>
;;; Copyright © 2015, 2016 Eric Bavier <bavier@member.fsf.org>
;;; Copyright © 2015 Andreas Enge <andreas@enge.fr>
;;; Copyright © 2015, 2016 Efraim Flashner <efraim@flashner.co.il>
;;; Copyright © 2016 Christopher Allan Webber <cwebber@dustycloud.org>
;;; Copyright © 2016 Al McElrath <hello@yrns.org>
;;; Copyright © 2016 Leo Famulari <leo@famulari.name>
;;; Copyright © 2016 Lukas Gradl <lgradl@openmailbox.org>
;;; Copyright © 2016 Alex Kost <alezost@gmail.com>
;;; Copyright © 2016 Troy Sankey <sankeytms@gmail.com>
;;; Copyright © 2016 ng0 <ng0@we.make.ritual.n0.is>
;;; Copyright © 2016 Clément Lassieur <clement@lassieur.org>
;;; Copyright © 2016 Arun Isaac <arunisaac@systemreboot.net>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.

(define-module (gnu packages mail)
  #:use-module (gnu packages)
  #:use-module (gnu packages autotools)
  #:use-module (gnu packages base)
  #:use-module (gnu packages backup)
  #:use-module (gnu packages bash)
  #:use-module (gnu packages bison)
  #:use-module (gnu packages curl)
  #:use-module (gnu packages cyrus-sasl)
  #:use-module (gnu packages databases)
  #:use-module (gnu packages dejagnu)
  #:use-module (gnu packages emacs)
  #:use-module (gnu packages enchant)
  #:use-module (gnu packages ghostscript)
  #:use-module (gnu packages glib)
  #:use-module (gnu packages gnome)
  #:use-module (gnu packages gnupg)
  #:use-module (gnu packages groff)
  #:use-module (gnu packages gsasl)
  #:use-module (gnu packages gtk)
  #:use-module (gnu packages guile)
  #:use-module (gnu packages flex)
  #:use-module (gnu packages libcanberra)
  #:use-module (gnu packages libevent)
  #:use-module (gnu packages libidn)
  #:use-module (gnu packages linux)
  #:use-module (gnu packages lua)
  #:use-module (gnu packages m4)
  #:use-module (gnu packages ncurses)
  #:use-module (gnu packages pcre)
  #:use-module (gnu packages perl)
  #:use-module (gnu packages python)
  #:use-module (gnu packages readline)
  #:use-module (gnu packages search)
  #:use-module (gnu packages texinfo)
  #:use-module (gnu packages compression)
  #:use-module (gnu packages glib)
  #:use-module (gnu packages pkg-config)
  #:use-module (gnu packages flex)
  #:use-module (gnu packages gdb)
  #:use-module (gnu packages samba)
  #:use-module (gnu packages tls)
  #:use-module (gnu packages networking)
  #:use-module (gnu packages web)
  #:use-module (gnu packages xml)
  #:use-module (gnu packages xorg)
  #:use-module ((guix licenses)
                #:select (gpl2 gpl2+ gpl3 gpl3+ lgpl2.1 lgpl2.1+ lgpl3+
                           non-copyleft (expat . license:expat) bsd-3
                           public-domain bsd-4 isc (openssl . license:openssl)
                           bsd-2))
  #:use-module (guix packages)
  #:use-module (guix download)
  #:use-module (guix git-download)
  #:use-module (guix utils)
  #:use-module (guix build-system gnu)
  #:use-module (guix build-system perl)
  #:use-module (guix build-system python)
  #:use-module (guix build-system trivial))

(define-public mailutils
  (package
    (name "mailutils")
    (version "2.2")
    (source (origin
             (method url-fetch)
             (uri (string-append "mirror://gnu/mailutils/mailutils-"
                                 version ".tar.bz2"))
             (sha256
              (base32
               "0szbqa12zqzldqyw97lxqax3ja2adis83i7brdfsxmrfw68iaf65"))
             (patches (search-patches "m4-gets-undeclared.patch"))))
    (build-system gnu-build-system)
    (arguments
     '(;; TODO: Add `--with-sql'.
       #:phases (alist-cons-before
                 'build 'pre-build
                 (lambda _
                   ;; Use Guile 2.0's public API.
                   (substitute* "libmu_scm/mu_message.c"
                     (("scm_i_string_length")
                      "scm_c_string_length"))

                   ;; This file should be generated to use the right
                   ;; value of $(libdir) et al.
                   (delete-file "libmu_scm/mailutils.scm")

                   ;; Use the right file name for `cat'.
                   (substitute* "testsuite/lib/mailutils.exp"
                     (("/bin/cat")
                      (which "cat"))))
                 %standard-phases)
       #:parallel-tests? #f))
    (inputs
     `(("dejagnu" ,dejagnu)
       ("m4" ,m4)
       ("texinfo" ,texinfo)
       ("guile" ,guile-2.0)
       ("gnutls" ,gnutls)
       ("ncurses" ,ncurses)

       ;; With Readline 6.3, examples/pop3client.c fails to build because it
       ;; uses the now undefined 'CPPFunction' type.
       ("readline" ,readline-6.2)

       ("linux-pam" ,linux-pam)
       ("libltdl" ,libltdl)
       ("gdbm" ,gdbm)))
    (home-page "http://www.gnu.org/software/mailutils/")
    (synopsis "Utilities and library for reading and serving mail")
    (description
     "GNU Mailutils is a collection of programs for managing, viewing and
processing electronic mail.  It contains both utilities and server daemons
and all operate in a protocol-agnostic way.  The underlying libraries are
also available, simplifying the addition of mail capabilities to new
software.")
    (license
     ;; Libraries are under LGPLv3+, and programs under GPLv3+.
     (list gpl3+ lgpl3+))))

(define-public fetchmail
  (package
    (name "fetchmail")
    (version "6.3.26")
    (source (origin
             (method url-fetch)
             (uri (string-append "mirror://sourceforge/fetchmail/branch_6.3/fetchmail-"
                                 version ".tar.xz"))
             (sha256
              (base32
               "0l78ayvi9dm8hd190gl139cs2xqsrf7r9ncilslw20mgvd6cbd3r"))))
    (build-system gnu-build-system)
    (inputs
     `(("openssl" ,openssl)))
    (arguments
     `(#:configure-flags (list (string-append "--with-ssl="
                                              (assoc-ref %build-inputs "openssl")))))
    (home-page "http://www.fetchmail.info/")
    (synopsis "Remote-mail retrieval and forwarding utility")
    (description
     "Fetchmail is a full-featured, robust, well-documented remote-mail
retrieval and forwarding utility intended to be used over on-demand
TCP/IP links (such as SLIP or PPP connections).  It supports every
remote-mail protocol now in use on the Internet: POP2, POP3, RPOP, APOP,
KPOP, all flavors of IMAP, ETRN, and ODMR.  It can even support IPv6
and IPSEC.

Fetchmail retrieves mail from remote mail servers and forwards it via SMTP,
so it can then be read by normal mail user agents such as mutt, elm
or BSD Mail.  It allows all your system MTA's filtering, forwarding, and
aliasing facilities to work just as they would on normal mail.")
    (license gpl2+))) ; most files are actually public domain or x11

(define-public mutt
  (package
    (name "mutt")
    (version "1.7.0")
    (source (origin
             (method url-fetch)
             (uri (string-append "ftp://ftp.mutt.org/pub/mutt/mutt-"
                                 version ".tar.gz"))
             (sha256
              (base32
               "0idkamdiwj9fgqaz1vzkfg78cnmkzp74skv0ibw2xjfq6ds9hghx"))
             (patches (search-patches "mutt-store-references.patch"))))
    (build-system gnu-build-system)
    (inputs
     `(("cyrus-sasl" ,cyrus-sasl)
       ("gdbm" ,gdbm)
       ("gpgme" ,gpgme)
       ("ncurses" ,ncurses)
       ("openssl" ,openssl)
       ("perl" ,perl)))
    (arguments
     `(#:configure-flags '("--enable-smtp"
                           "--enable-imap"
                           "--enable-pop"
                           "--enable-gpgme"
                           "--enable-hcache" ; for header caching
                           "--enable-sidebar"
                           "--with-ssl"
                           "--with-sasl"
                           ;; so that mutt does not check whether the path
                           ;; exists, which it does not in the chroot
                           "--with-mailpath=/var/mail")))
    (home-page "http://www.mutt.org/")
    (synopsis "Mail client")
    (description
     "Mutt is a small but very powerful text-based mail client for Unix
operating systems.")
    (license gpl2+)))

(define-public gmime
  (package
    (name "gmime")
    (version "2.6.20")
    (source (origin
              (method url-fetch)
              (uri (string-append "mirror://gnome/sources/gmime/"
                                  (version-major+minor version)
                                  "/gmime-" version ".tar.xz"))
              (sha256
               (base32
                "0rfzbgsh8ira5p76kdghygl5i3fvmmx4wbw5rp7f8ajc4vxp18g0"))))
    (build-system gnu-build-system)
    (native-inputs
     `(("pkg-config" ,pkg-config)
       ("gnupg" ,gnupg)))               ; for tests only
    (inputs `(("glib" ,glib)
              ("gpgme" ,gpgme)
              ("zlib" ,zlib)))
    (arguments
     `(#:phases
       (modify-phases %standard-phases
         (add-after
          'unpack 'patch-paths-in-tests
          (lambda _
            ;; The test programs run several programs using 'system' with
            ;; hard-coded paths.  Here we patch them all.
            ;; We use ISO-8859-1 here because test-iconv.c contains
            ;; raw byte sequences in several different encodings.
            (with-fluids ((%default-port-encoding #f))
              (substitute* (find-files "tests" "\\.c$")
                (("(system *\\(\")(/[^ ]*)" all pre prog-path)
                 (let* ((base (basename prog-path))
                        (prog (which base)))
                   (string-append pre
                                  (or prog (error "not found: " base))))))))))))
    (home-page "http://spruce.sourceforge.net/gmime/")
    (synopsis "MIME message parser and creator library")
    (description
     "GMime provides a core library and set of utilities which may be used for
the creation and parsing of messages using the Multipurpose Internet Mail
Extension (MIME).")
    (license (list lgpl2.1+ gpl2+ gpl3+))))

(define-public bogofilter
  (package
    (name "bogofilter")
    (version "1.2.4")
    (source (origin
              (method url-fetch)
              (uri (string-append "mirror://sourceforge/bogofilter/bogofilter-"
                                  version "/bogofilter-"
                                  version ".tar.bz2"))
              (sha256
               (base32
                "1d56n2m9inm8gnzm88aa27xl2a7sp7aff3484vmflpqkinjqf0p1"))))
    (build-system gnu-build-system)
    (arguments
     '(#:phases (alist-cons-before
                 'check 'pre-check
                 (lambda _
                   (substitute* "src/tests/t.frame"
                     (("GREP=/bin/grep")
                      (string-append "GREP=" (which "grep") "\n"))))
                 %standard-phases)))
    (native-inputs `(("flex" ,flex)))
    (inputs `(("bdb" ,bdb)))
    (home-page "http://bogofilter.sourceforge.net/")
    (synopsis "Mail classifier based on a Bayesian filter")
    (description
     "Bogofilter is a mail filter that classifies mail as spam or ham
 (non-spam) by a statistical analysis of the message's header and
content (body).  The program is able to learn from the user's classifications
and corrections.  It is based on a Bayesian filter.")
    (license gpl2)))

(define-public offlineimap
  (package
    (name "offlineimap")
    (version "7.0.6")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://github.com/OfflineIMAP/offlineimap/"
                                  "archive/v" version ".tar.gz"))
              (file-name (string-append name "-" version ".tar.gz"))
              (sha256
               (base32
                "1msg0v5i3v4mvjm2c5alzz91dk5y20h4xdr60lcz3507fv80407m"))))
    (build-system python-build-system)
    (inputs `(("python2-pysqlite" ,python2-pysqlite)
              ("python2-six" ,python2-six)))
    (arguments
     ;; The setup.py script expects python-2.
     `(#:python ,python-2
      ;; Tests require a modifiable IMAP account.
       #:tests? #f
       #:phases
       (modify-phases %standard-phases
         (add-after 'install 'wrap-binary
           (lambda* (#:key inputs outputs #:allow-other-keys)
             (let* ((out (assoc-ref outputs "out"))
                    (bin (string-append out "/bin/offlineimap")))
               (wrap-program bin
                 `("PYTHONPATH" ":" prefix (,(getenv "PYTHONPATH"))))
               #t))))))
    (home-page "http://www.offlineimap.org")
    (synopsis "Sync emails between two repositories")
    (description
     "OfflineImap synchronizes emails between two repositories, so that you
can read the same mailbox from multiple computers.  It supports IMAP as REMOTE
repository and Maildir/IMAP as LOCAL repository.")
    (license gpl2+)))

(define-public mu
  (package
    (name "mu")
    (version "0.9.16")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://github.com/djcb/mu/archive/v"
                                  version ".tar.gz"))
              (file-name (string-append "mu-" version ".tar.gz"))
              (sha256
               (base32
                "0p7hqri1r1x6750x138cc29mh81kdav2dcim26y58s8an206h25g"))))
    (build-system gnu-build-system)
    (native-inputs
     `(("pkg-config" ,pkg-config)
       ("glib" ,glib "bin")             ; for gtester
       ("autoconf" ,autoconf)
       ("automake" ,automake)
       ("emacs" ,emacs-minimal)
       ("libtool" ,libtool)
       ("texinfo" ,texinfo)))
    ;; TODO: Add webkit and gtk to build the mug GUI.
    (inputs
     `(("xapian" ,xapian)
       ("guile" ,guile-2.0)
       ("glib" ,glib)
       ("gmime" ,gmime)
       ("tzdata" ,tzdata)))             ;for mu/test/test-mu-query.c
    (arguments
     `(#:modules ((guix build gnu-build-system)
                  (guix build utils)
                  (guix build emacs-utils))
       #:imported-modules (,@%gnu-build-system-modules
                           (guix build emacs-utils))
       #:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'patch-configure.ac
           ;; By default, elisp code goes to "share/emacs/site-lisp/mu4e",
           ;; so our Emacs package can't find it.  Setting "--with-lispdir"
           ;; configure flag doesn't help because "mu4e" will be added to
           ;; the lispdir anyway, so we have to modify "configure.ac".
           (lambda _
             (substitute* "configure.ac"
               (("^ +lispdir=.*") ""))
             #t))
         (add-after 'patch-configure.ac 'autoreconf
           (lambda _
             (zero? (system* "autoreconf" "-vi"))))
         (add-before 'check 'check-tz-setup
           (lambda* (#:key inputs #:allow-other-keys)
             ;; For mu/test/test-mu-query.c
             (setenv "TZDIR"
                     (string-append (assoc-ref inputs "tzdata")
                                    "/share/zoneinfo"))
             #t))
         (add-after 'install 'install-emacs-autoloads
           (lambda* (#:key outputs #:allow-other-keys)
             (emacs-generate-autoloads
              "mu4e"
              (string-append (assoc-ref outputs "out")
                             "/share/emacs/site-lisp"))
             #t)))))
    (home-page "http://www.djcbsoftware.nl/code/mu/")
    (synopsis "Quickly find emails")
    (description
     "Mu is a tool for dealing with e-mail messages stored in the
Maildir-format.  Mu's purpose in life is to help you to quickly find the
messages you need; in addition, it allows you to view messages, extract
attachments, create new maildirs, and so on.")
    (license gpl3+)))

(define-public alot
  (package
    (name "alot")
    (version "0.3.7")
    (source (origin
              (method url-fetch)
              ;; package author intends on distributing via github rather
              ;; than pypi:
              ;; https://github.com/pazz/alot/issues/877#issuecomment-230173331
              (uri (string-append "https://github.com/pazz/alot/archive/"
                                  version ".tar.gz"))
              (file-name (string-append "alot-" version ".tar.gz"))
              (sha256
               (base32
                "09md9llg38r6xby8l0y0zf8nhlh91cr4xs0r15b294hhp8hl2bgx"))))
    (build-system python-build-system)
    (arguments
     `(#:tests? #f ; no tests
       ;; python 3 is unsupported, more info:
       ;; https://github.com/pazz/alot/blob/0.3.7/docs/source/faq.rst
       #:python ,python-2))
    (inputs
     `(("python2-magic" ,python2-magic)
       ("python2-configobj" ,python2-configobj)
       ("python2-twisted" ,python2-twisted)
       ("python2-urwid" ,python2-urwid)
       ("python2-urwidtrees" ,python2-urwidtrees)
       ("python2-pygpgme" ,python2-pygpgme)
       ("python2-notmuch" ,python2-notmuch)))
    (home-page "https://github.com/pazz/alot")
    (synopsis "Commandline MUA using notmuch")
    (description
     "Alot is an experimental terminal mail user agent (MUA) based on
@code{notmuch} mail.  It is written in Python using the @code{urwid} toolkit.")
    (license gpl3+)))

(define-public notmuch
  (package
    (name "notmuch")
    (version "0.22.1")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://notmuchmail.org/releases/notmuch-"
                                  version ".tar.gz"))
              (sha256
               (base32
                "0jwpda3q023dn3sp41n8648951i7iagfv8zzpriv7hpkjivlafg7"))))
    (build-system gnu-build-system)
    (arguments
     '(#:tests? #f ; FIXME: 694 tests; 170 fail and 100 are skipped
                   ; with perl input: 50 fail and 100 are skipped
       #:phases (modify-phases %standard-phases
                  (replace 'configure
                    (lambda* (#:key outputs #:allow-other-keys)
                      (setenv "CC" "gcc")
                      (setenv "CONFIG_SHELL" (which "sh"))

                      (let ((out (assoc-ref outputs "out")))
                        (zero? (system* "./configure"
                                        (string-append "--prefix=" out)))))))))
    (native-inputs
     `(("bash-completion" ,bash-completion)
       ("emacs" ,emacs-minimal)
       ("pkg-config" ,pkg-config)
       ("python" ,python-2)
       ("python-docutils" ,python2-docutils)
       ("python-sphinx" ,python2-sphinx)))
    (inputs
     `(("glib" ,glib)
       ("gmime" ,gmime)
       ("talloc" ,talloc)
       ("xapian" ,xapian)
       ("zlib" ,zlib)))
    (home-page "http://notmuchmail.org/")
    (synopsis "Thread-based email index, search, and tagging")
    (description
     "Notmuch is a command-line based program for indexing, searching, read-
ing, and tagging large collections of email messages.")
    (license gpl3+)))

(define-public notmuch-addrlookup-c
  (package
    (name "notmuch-addrlookup-c")
    (version "7")
    (source (origin
              (method url-fetch)
              (uri (string-append
                    "https://github.com/aperezdc/" name "/archive/v"
                    version ".tar.gz"))
              (file-name (string-append name "-" version ".tar.gz"))
              (sha256
               (base32
                "0rslg2ifgyhl6asv3yr1f62m9xjfcinv7i6qb07h2k217jqlmrri"))))
    (build-system gnu-build-system)
    (arguments
     '(#:tests? #f ; no tests
       #:make-flags (list "CC=gcc"
                          (string-append "PREFIX="
                                         (assoc-ref %outputs "out")))
       #:phases (modify-phases %standard-phases
                  (delete 'configure)
                  ;; Remove vim code completion config, it's not needed to
                  ;; build (or be patched).
                  (add-before 'patch-source-shebangs 'delete-ycm-file
                              (lambda _ (delete-file ".ycm_extra_conf.py")))
                  (replace 'install
                           (lambda* (#:key outputs #:allow-other-keys)
                             (let ((bin (string-append
                                         (assoc-ref outputs "out") "/bin")))
                               (install-file "notmuch-addrlookup" bin)))))))
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (inputs
     `(("glib" ,glib)
       ("notmuch" ,notmuch)))
    (home-page "https://github.com/aperezdc/notmuch-addrlookup-c")
    (synopsis "Address lookup tool for Notmuch")
    (description "This is an address lookup tool using a Notmuch database,
useful for email address completion.")
    (license license:expat)))

(define-public python-notmuch
  (package
    (name "python-notmuch")
    (version "0.22.1")
    ;; Notmuch python bindings are now unavailable on pypi.  The
    ;; bindings are distributed via the notmuch release tarball.
    (source (package-source notmuch))
    (build-system python-build-system)
    (inputs `(("notmuch" ,notmuch)))
    (arguments
     `(#:tests? #f  ; no "test" target
       #:phases
       (modify-phases %standard-phases
         ;; This python package lives in a subdirectory of the notmuch source
         ;; tree, so chdir into it before building.
         (add-after 'unpack 'enter-python-dir
           (lambda _ (chdir "bindings/python") #t))
         ;; Make sure the correct notmuch shared library gets loaded.
         (add-before 'build 'set-libnotmuch-file-name
           (lambda* (#:key inputs #:allow-other-keys)
             (let ((notmuch (assoc-ref inputs "notmuch")))
               (substitute* "notmuch/globals.py"
                 (("libnotmuch\\.so\\.")
                  (string-append notmuch "/lib/libnotmuch.so.")))
               #t))))))
    (home-page "http://notmuchmail.org/")
    (synopsis "Python bindings of the Notmuch mail indexing library")
    (description
     "This package provides Python bindings to use the Notmuch mail indexing
and search library.")
    (license gpl3+)))

(define-public python2-notmuch
  (package-with-python2 python-notmuch))

(define-public getmail
  (package
    (name "getmail")
    (version "4.49.0")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "http://pyropus.ca/software/getmail/old-versions/"
                           name "-" version ".tar.gz"))
       (sha256
        (base32
         "1m0yzxd05fklwbmjj1n2q4sx397c1j5qi9a0r5fv3h8pplz4lv0w"))))
    (build-system python-build-system)
    (arguments
     `(#:tests? #f ; no tests
       #:python ,python-2))
    (home-page "http://pyropus.ca/software/getmail/")
    (synopsis "Mail retriever")
    (description
     "A flexible, extensible mail retrieval system with support for
POP3, IMAP4, SSL variants of both, maildirs, mboxrd files, external MDAs,
arbitrary message filtering, single-user and domain-mailboxes, and many other
useful features.")

    ;; License is specified in file '__init__.py'.
    (license gpl2)))

(define-public libetpan
  (package
    (name "libetpan")
    (version "1.7.2")
    (source (origin
             (method url-fetch)
             (uri (string-append "https://github.com/dinhviethoa/" name
                   "/archive/" version ".tar.gz"))
             (file-name (string-append name "-" version ".tar.gz"))
             (sha256
               (base32 "081ixgj3skglq9i7v0jb835lmfx21zi4i5b7997igwr0lj174y9j"))))
    (build-system gnu-build-system)
    (native-inputs `(("autoconf" ,(autoconf-wrapper))
                     ("automake" ,automake)
                     ("libtool" ,libtool)
                     ("pkg-config" ,pkg-config)))
    (propagated-inputs
     ;; 'libetpan-config --libs' returns '-lssl -lcrypto -lsasl2', so these
     ;; libraries need to be propagated.
     `(("cyrus-sasl" ,cyrus-sasl)
       ("openssl" ,openssl)))
    (inputs
     `(("curl" ,curl)
       ("expat" ,expat)
       ("zlib" ,zlib)))
    (arguments
      '(#:phases
        (modify-phases %standard-phases
          (add-after 'unpack 'autogen
            (lambda _
              (setenv "NOCONFIGURE" "true")
              (zero? (system* "sh" "autogen.sh")))))
        #:configure-flags
        '("--disable-static" "--disable-db")))
    (home-page "http://www.etpan.org/libetpan.html")
    (synopsis "Portable middleware for email access")
    (description
     "The purpose of this mail library is to provide a portable, efficient
framework for different kinds of mail access: IMAP, SMTP, POP and NNTP.  It
provides an API for C language.  It's the low-level API used by MailCore and
MailCore 2.")
    (license (non-copyleft "file://COPYING"))))

(define-public claws-mail
  (package
    (name "claws-mail")
    (version "3.14.0")
    (source (origin
              (method url-fetch)
              (uri (string-append
                    "http://www.claws-mail.org/releases/" name "-" version
                    ".tar.xz"))
              (sha256
               (base32
                "0nfchgga3ir91s8rky0a0vnz8cgj2f6h716wh3cmb466a01xfss6"))))
    (build-system gnu-build-system)
    (native-inputs `(("pkg-config" ,pkg-config)))
    (inputs `(("bogofilter" ,bogofilter)
              ("curl" ,curl)
              ("dbus-glib" ,dbus-glib)
              ("enchant" ,enchant)
              ("expat" ,expat)
              ("ghostscript" ,ghostscript)
              ("hicolor-icon-theme" ,hicolor-icon-theme)
              ("gnupg" ,gnupg)
              ("gnutls" ,gnutls)
              ("gpgme" ,gpgme)
              ("gtk" ,gtk+-2)
              ("libarchive" ,libarchive)
              ("libcanberra" ,libcanberra)
              ("libetpan" ,libetpan)
              ("libnotify" ,libnotify)
              ("libsm" ,libsm)
              ("libxml2" ,libxml2)
              ("perl" ,perl)
              ("python-2" ,python-2)
              ("mime-info" ,shared-mime-info)))
    (arguments
      '(#:configure-flags
        '("--enable-gnutls" "--enable-pgpmime-plugin" "--enable-enchant")
        #:phases (modify-phases %standard-phases
                   (add-before 'build 'patch-mime
                     (lambda* (#:key inputs #:allow-other-keys)
                       (substitute* "src/procmime.c"
                         (("/usr/share/mime/globs")
                          (string-append (assoc-ref inputs "mime-info")
                                         "/share/mime/globs"))))))))
    (synopsis "GTK-based Email client")
    (description
     "Claws-Mail is an email client (and news reader) based on GTK+.  The
appearance and interface are designed to be familiar to new users coming from
other popular email clients, as well as experienced users.  Almost all commands
are accessible with the keyboard.  Plus, Claws-Mail is extensible via addons
which can add many functionalities to the base client.")
    (home-page "http://www.claws-mail.org/")
    (license gpl3+))) ; most files are actually public domain or x11

(define-public msmtp
  (package
    (name "msmtp")
    (version "1.6.5")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "mirror://sourceforge/msmtp/msmtp/" version
                           "/msmtp-" version ".tar.xz"))
       (sha256
        (base32
         "01jh9ba49bih8zsh40myw6qq1ll210q1vw0jg865vrn7jc3dd83n"))))
    (build-system gnu-build-system)
    (inputs
     `(("libidn" ,libidn)
       ("libsecret" ,libsecret)
       ("gnutls" ,gnutls)
       ("zlib" ,zlib)
       ("gsasl" ,gsasl)))
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (home-page "http://msmtp.sourceforge.net/")
    (arguments
     `(#:configure-flags (list "--with-libgsasl"
                               "--with-libidn"
                               "--with-tls=gnutls")
       #:phases
       (modify-phases %standard-phases
         (add-after 'install 'install-msmtpq
           (lambda* (#:key outputs #:allow-other-keys)
             (let* ((out (assoc-ref outputs "out"))
                    (bin (string-append out "/bin"))
                    (doc (string-append out "/share/doc/msmtp"))
                    (msmtpq (string-append "scripts/msmtpq")))
               (install-file (string-append msmtpq "/msmtpq") bin)
               (install-file (string-append msmtpq "/msmtp-queue") bin)
               (install-file (string-append msmtpq "/README.msmtpq") doc)
               #t))))))
    (synopsis
     "Simple and easy to use SMTP client with decent sendmail compatibility")
    (description
     "msmtp is an SMTP client.  In the default mode, it transmits a mail to
an SMTP server (for example at a free mail provider) which takes care of further
delivery.")
    (license gpl3+)))

(define-public exim
  (package
    (name "exim")
    (version "4.87")
    (source
     (origin
       (method url-fetch)
       (uri (list (string-append "ftp://ftp.exim.org/pub/exim/exim4/exim-"
                                 version ".tar.bz2")
                  (string-append "ftp://ftp.exim.org/pub/exim/exim4/old/exim-"
                                 version ".tar.bz2")))
       (sha256
        (base32
         "1jbxn13shq90kpn0s73qpjnx5xm8jrpwhcwwgqw5s6sdzw6iwsbl"))))
    (build-system gnu-build-system)
    (inputs
     `(("bdb" ,bdb)
       ("gnutls" ,gnutls)
       ("gzip" ,gzip)
       ("bzip2" ,bzip2)
       ("xz" ,xz)
       ("perl" ,perl)
       ("libxt" ,libxt)
       ("libxaw" ,libxaw)))
    (native-inputs
     `(("pcre" ,pcre "bin")
       ("perl" ,perl)))
    (arguments
     '(#:phases
       (alist-replace
        'configure
        ;; We'd use #:make-flags but the top-level Makefile calls others
        ;; recursively, so just set all variables this way.
        (lambda* (#:key outputs inputs #:allow-other-keys)
          (substitute* '("Makefile" "OS/Makefile-Default")
            (("(RM_COMMAND=).*" all var)
             (string-append var "rm\n")))
          (copy-file "src/EDITME" "Local/Makefile")
          (copy-file "exim_monitor/EDITME" "Local/eximon.conf")
          (let ((out (assoc-ref outputs "out"))
                (gzip (assoc-ref inputs "gzip"))
                (bzip2 (assoc-ref inputs "bzip2"))
                (xz (assoc-ref inputs "xz")))
            (substitute* '("Local/Makefile")
              (("(BIN_DIRECTORY=).*" all var)
               (string-append var out "/bin\n"))
              (("(CONFIGURE_FILE=).*" all var)
               (string-append var out "/etc/exim.conf\n"))
              (("(EXIM_USER=).*" all var)
               (string-append var "nobody\n"))
              (("(FIXED_NEVER_USERS=).*" all var)
               (string-append var "\n"))  ;XXX no root in build environment
              (("(COMPRESS_COMMAND=).*" all var)
               (string-append var gzip "/bin/gzip\n"))
              (("(ZCAT_COMMAND=).*" all var)
               (string-append var gzip "/bin/zcat\n")))
            ;; This file has hardcoded names for tools despite the zcat
            ;; configuration above.
            (substitute* '("src/exigrep.src")
              (("'zcat'") (string-append "'" gzip "/bin/zcat'"))
              (("'bzcat'") (string-append "'" bzip2 "/bin/bzcat'"))
              (("'xzcat'") (string-append "'" xz "/bin/xzcat'"))
              (("'lzma'") (string-append "'" xz "/bin/lzma'")))))
        (alist-cons-before
         'build 'fix-sh-paths
         (lambda* (#:key inputs #:allow-other-keys)
           (substitute* '("scripts/lookups-Makefile" "scripts/reversion")
             (("SHELL=/bin/sh") "SHELL=sh"))
           (substitute* '("scripts/Configure-config.h")
             (("\\| /bin/sh") "| sh"))
           (let ((bash (assoc-ref inputs "bash")))
             (substitute* '("scripts/Configure-eximon")
               (("#!/bin/sh") (string-append "#!" bash "/bin/sh")))))
         %standard-phases))
       #:make-flags '("INSTALL_ARG=-no_chown")
       ;; No 'check' target.
       #:tests? #f))
    (home-page "http://www.exim.org/")
    (synopsis
     "Message Transfer Agent (MTA) developed at the University of Cambridge")
    (description
     "Exim is a message transfer agent (MTA) developed at the University of
Cambridge for use on Unix systems connected to the Internet.  In style it is
similar to Smail 3, but its facilities are more general.  There is a great
deal of flexibility in the way mail can be routed, and there are extensive
facilities for checking incoming mail.")
    (license gpl2+)))

(define-public dovecot
  (package
    (name "dovecot")
    (version "2.2.25")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "http://www.dovecot.org/releases/"
                           (version-major+minor version) "/"
                           name "-" version ".tar.gz"))
       (sha256 (base32
                "0rwn5wc5b8j9fzqcjggdgpzmb77myrf4ra294z1gg5v3hhng7nfq"))))
    (build-system gnu-build-system)
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (inputs
     `(("openssl" ,openssl)
       ("zlib" ,zlib)
       ("bzip2" ,bzip2)
       ("sqlite" ,sqlite)
       ("linux-pam" ,linux-pam)))
    (arguments
     `(#:configure-flags '("--sysconfdir=/etc"
                           "--localstatedir=/var")
       #:phases (modify-phases %standard-phases
                  (add-before
                   'configure 'pre-configure
                   (lambda _
                     ;; Simple hack to avoid installing in /etc
                     (substitute* '("doc/Makefile.in"
                                    "doc/example-config/Makefile.in")
                       (("pkgsysconfdir = .*")
                        "pkgsysconfdir = /tmp/etc"))
                     #t)))))
    (home-page "http://www.dovecot.org")
    (synopsis "Secure POP3/IMAP server")
    (description
     "Dovecot is a mail server whose major goals are security and reliability.
It supports mbox/Maildir and its own dbox/mdbox formats.")
    ;; Most source files are covered by either lgpl2.1 or expat.  The SHA code
    ;; is covered by a variant of BSD-3, and UnicodeData.txt is covered by the
    ;; Unicode, Inc. License Agreement for Data Files and Software.
    (license (list lgpl2.1 license:expat (non-copyleft "file://COPYING")))))

(define-public isync
  (package
    (name "isync")
    (version "1.2.1")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "mirror://sourceforge/isync/isync/"
                           version "/isync-" version ".tar.gz"))
       (sha256 (base32
                "1bij6nm06ghkg98n2pdyacam2fyg5y8f7ajw0d5653m0r4ldw5p7"))))
    (build-system gnu-build-system)
    (inputs
     `(("bdb" ,bdb)
       ("openssl" ,openssl)))
    (home-page "http://isync.sourceforge.net/")
    (synopsis "Mailbox synchronization program")
    (description
     "isync/mbsync is command line tool for two-way synchronization of
mailboxes.  Currently Maildir and IMAP are supported types.")
    (license gpl2+)))

(define-public perl-email-abstract
  (package
    (name "perl-email-abstract")
    (version "3.008")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "mirror://cpan/authors/id/R/RJ/RJBS/"
                           "Email-Abstract-" version ".tar.gz"))
       (sha256
        (base32
         "0h42rhvp769wb421cpbbg6v6xjp8iv86mvz70pqgfgf4nsn6jwgw"))))
    (build-system perl-build-system)
    (propagated-inputs
     `(("perl-email-simple" ,perl-email-simple)
       ("perl-module-pluggable" ,perl-module-pluggable)
       ("perl-mro-compat" ,perl-mro-compat)))
    (home-page "http://search.cpan.org/dist/Email-Abstract")
    (synopsis "Interface to mail representations")
    (description "Email::Abstract provides module writers with the ability to
write simple, representation-independent mail handling code.")
    (license (package-license perl))))

(define-public perl-email-address
  (package
    (name "perl-email-address")
    (version "1.907")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "mirror://cpan/authors/id/R/RJ/RJBS/"
                           "Email-Address-" version ".tar.gz"))
       (sha256
        (base32
         "1ai4r149pzjv9dc2vddir8zylj0z1pii93rm4g591lx7avim71hx"))))
    (build-system perl-build-system)
    (home-page "http://search.cpan.org/dist/Email-Address")
    (synopsis "Email address parsing and creation")
    (description "Email::Address implements a regex-based RFC 2822 parser that
locates email addresses in strings and returns a list of Email::Address
objects found.  Alternatively you may construct objects manually.")
    (license (package-license perl))))

(define-public perl-email-date-format
  (package
    (name "perl-email-date-format")
    (version "1.005")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "mirror://cpan/authors/id/R/RJ/RJBS/"
                           "Email-Date-Format-" version ".tar.gz"))
       (sha256
        (base32
         "012ivfwpnbl3wr50f9c6f4azhdlxnm31pdn72528g79v61z6372p"))))
    (build-system perl-build-system)
    (home-page "http://search.cpan.org/dist/Email-Date-Format")
    (synopsis "Produce RFC 2822 date strings")
    (description "Email::Date::Format provides a means for generating an RFC
2822 compliant datetime string.")
    (license (package-license perl))))

(define-public perl-email-messageid
  (package
    (name "perl-email-messageid")
    (version "1.405")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "mirror://cpan/authors/id/R/RJ/RJBS/"
                           "Email-MessageID-" version ".tar.gz"))
       (sha256
        (base32
         "09216naz21x99ff33wdm3j3zq1zhdbxhrsmx8bvavjrw3gjsvrq3"))))
    (build-system perl-build-system)
    (home-page "http://search.cpan.org/dist/Email-MessageID")
    (synopsis "Generate world unique message-ids")
    (description "Email::MessageID generates recommended message-ids to
identify a message uniquely.")
    (license (package-license perl))))

(define-public perl-email-mime
  (package
    (name "perl-email-mime")
    (version "1.929")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "mirror://cpan/authors/id/R/RJ/RJBS/"
                           "Email-MIME-" version ".tar.gz"))
       (sha256
        (base32
         "1sf7dldg4dvicyw6dl1vx6s1gjq3fcppi0103ikl0vi6v5xjdjdh"))))
    (build-system perl-build-system)
    (propagated-inputs
     `(("perl-email-address" ,perl-email-address)
       ("perl-email-messageid" ,perl-email-messageid)
       ("perl-email-mime-contenttype" ,perl-email-mime-contenttype)
       ("perl-email-mime-encodings" ,perl-email-mime-encodings)
       ("perl-email-simple" ,perl-email-simple)
       ("perl-mime-types" ,perl-mime-types)))
    (home-page "http://search.cpan.org/dist/Email-MIME")
    (synopsis "MIME message handling")
    (description "Email::MIME is an extension of the Email::Simple module, to
handle MIME encoded messages.  It takes a message as a string, splits it up
into its constituent parts, and allows you access to various parts of the
message.  Headers are decoded from MIME encoding.")
    (license (package-license perl))))

(define-public perl-email-mime-contenttype
  (package
    (name "perl-email-mime-contenttype")
    (version "1.017")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "mirror://cpan/authors/id/R/RJ/RJBS/"
                           "Email-MIME-ContentType-" version ".tar.gz"))
       (sha256
        (base32
         "1cl1l97lg690dh7i704hqi7yhxalq1chy7ylld5yc5v38jqa6gcn"))))
    (build-system perl-build-system)
    (native-inputs
     `(("perl-capture-tiny" ,perl-capture-tiny)))
    (home-page "http://search.cpan.org/dist/Email-MIME-ContentType")
    (synopsis "Parse MIME Content-Type headers")
    (description "Email::MIME::ContentType parses a MIME Content-Type
header.")
    (license (package-license perl))))

(define-public perl-email-mime-encodings
  (package
    (name "perl-email-mime-encodings")
    (version "1.315")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "mirror://cpan/authors/id/R/RJ/RJBS/"
                           "Email-MIME-Encodings-" version ".tar.gz"))
       (sha256
        (base32
         "0p5b8g9gh35m8fqrpx60g4bp98rvwd02n5b0vm9wh7mk0xah8wac"))))
    (build-system perl-build-system)
    (native-inputs
     `(("perl-capture-tiny" ,perl-capture-tiny)))
    (home-page "http://search.cpan.org/dist/Email-MIME-Encodings")
    (synopsis "Unified interface to MIME encoding and decoding")
    (description "This module wraps MIME::Base64 and MIME::QuotedPrint.")
    (license (package-license perl))))

(define-public perl-email-sender
  (package
    (name "perl-email-sender")
    (version "1.300016")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "mirror://cpan/authors/id/R/RJ/RJBS/"
                           "Email-Sender-" version ".tar.gz"))
       (sha256
        (base32
         "18x26fjh399q3s2g8dajb9r10633c46jrnbvycpnpclgnzhjs100"))))
    (build-system perl-build-system)
    (native-inputs
     `(("perl-capture-tiny" ,perl-capture-tiny)))
    (propagated-inputs
     `(("perl-email-abstract" ,perl-email-abstract)
       ("perl-email-address" ,perl-email-address)
       ("perl-email-simple" ,perl-email-simple)
       ("perl-list-moreutils" ,perl-list-moreutils)
       ("perl-module-runtime" ,perl-module-runtime)
       ("perl-moo" ,perl-moo)
       ("perl-moox-types-mooselike" ,perl-moox-types-mooselike)
       ("perl-sub-exporter" ,perl-sub-exporter)
       ("perl-throwable" ,perl-throwable)
       ("perl-try-tiny" ,perl-try-tiny)))
    (home-page "http://search.cpan.org/dist/Email-Sender")
    (synopsis "Perl library for sending email")
    (description "Email::Sender replaces the old and sometimes problematic
Email::Send library.")
    (license (package-license perl))))

(define-public perl-email-simple
  (package
    (name "perl-email-simple")
    (version "2.206")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "mirror://cpan/authors/id/R/RJ/RJBS/"
                           "Email-Simple-" version ".tar.gz"))
       (sha256
        (base32
         "19dpy3j5na2k9qw1jcpc8ia25038068r9j1bn34f9yyrisz7s522"))))
    (build-system perl-build-system)
    (propagated-inputs
     `(("perl-email-date-format" ,perl-email-date-format)))
    (home-page "http://search.cpan.org/dist/Email-Simple")
    (synopsis "Parsing of RFC 2822 messages")
    (description "Email::Simple provides simple parsing of RFC 2822 message
format and headers.")
    (license (package-license perl))))

(define-public libesmtp
  (package
    (name "libesmtp")
    (version "1.0.6")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "http://www.stafford.uklinux.net/libesmtp/libesmtp-"
                           version ".tar.bz2"))
       (sha256
        (base32
         "02zbniyz7qys1jmx3ghx21kxmns1wc3hmv80gp7ag7yra9f1m9nh"))))
    (build-system gnu-build-system)
    (propagated-inputs
     `(("openssl" ,openssl)))
    (home-page "http://www.stafford.uklinux.net/libesmtp/")
    (synopsis "Library for sending mail via remote hosts using SMTP")
    (description "libESMTP is an SMTP client which manages posting (or
submission of) electronic mail via a preconfigured Mail Transport Agent (MTA).
It may be used as part of a Mail User Agent (MUA) or other program that must
be able to post electronic mail where mail functionality may not be that
program's primary purpose.")
    (license (list lgpl2.1+ gpl2+))))

(define-public esmtp
  (package
    (name "esmtp")
    (version "1.2")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/andywingo/esmtp.git")
             (commit "01bf9fc")))
       (sha256
        (base32
         "1ay282rrl92h0m0m8z5zzjnwiiagi7c78aq2qvhia5mw7prwfyw2"))
       (file-name (string-append name "-" version "-checkout"))))
    (arguments
     `(#:phases (modify-phases %standard-phases
                  (add-before
                   'configure 'autoconf
                   (lambda _ (zero? (system* "autoreconf" "-vfi")))))))
    (build-system gnu-build-system)
    (native-inputs
     `(("bison" ,bison)
       ("flex" ,flex)
       ("autoconf" ,autoconf)
       ("automake" ,automake)
       ("libtool" ,libtool)))
    (inputs
     `(("libesmtp" ,libesmtp)))
    (home-page "http://sourceforge.net/projects/esmtp/")
    (synopsis "Relay-only mail transfer agent (MTA)")
    (description "Esmtp is a simple relay-only mail transfer agent built using
libESMTP.  It sends e-mail via a remote SMTP server using credentials from the
user's @file{$HOME/.esmtprc} configuration file; see the @command{esmtprc} man
page for more on configuration.  This package also provides minimal
compatibility shims for the @command{sendmail}, @command{mailq}, and
@command{newaliases} commands.")
    (license gpl2+)))

(define-public fdm
  (package
    (name "fdm")
    (version "1.9")
    (source (origin
             (method url-fetch)
             (uri (string-append "https://github.com/nicm/fdm/releases/download/"
                                 version "/fdm-"
                                 version ".tar.gz"))
             (file-name (string-append name "-" version ".tar.gz"))
             (sha256
               (base32 "054rscijahiza5f9qha79rg3siji3bk5mk10f8c2vqx7m4w6qh8n"))))
    (build-system gnu-build-system)
    (inputs
     `(("tdb" ,tdb)
       ("openssl" ,openssl)
       ("zlib" ,zlib)))
    (home-page "https://github.com/nicm/fdm")
    (synopsis "Mail Retrieval Agent (MRA) and Mail Delivery Agent (MDA)")
    (description "fdm is a program designed to fetch mail from POP3
or IMAP servers, or receive local mail from stdin, and
deliver it in various ways.")
    (license
     ;; Why point to a source file?  Well, all the individual files have a
     ;; copy of this license in their headers, but there's no seprate file
     ;; with that information.
     (non-copyleft "https://github.com/nicm/fdm/blob/master/command.c"))))


(define-public procmail
  (package
    (name "procmail")
    (version "3.22")
    (source
     (origin
       (method url-fetch)
       (uri (string-append
             "ftp://ftp.fu-berlin.de/pub/unix/mail/procmail/procmail-"
             version
             ".tar.gz"))
       (sha256
        (base32
         "05z1c803n5cppkcq99vkyd5myff904lf9sdgynfqngfk9nrpaz08"))
       ;; The following patch fixes an ambiguous definition of
       ;; getline() in formail.c.  The patch is provided by Debian as
       ;; patch 24.
       (patches (search-patches "procmail-ambiguous-getline-debian.patch"
                                "procmail-CVE-2014-3618.patch"))))
    (arguments
     `(#:phases (modify-phases %standard-phases
                  (replace 'configure
                    (lambda _
                      (substitute* "Makefile"
                        (("/bin/sh")
                         (which "sh"))
                        (("/usr")
                         (assoc-ref %outputs "out"))
                        (("/bin/rm")
                         (which "rm")))
                      #t)))
       #:tests? #f)) ;; There are no tests indicating a successful
    ;; build.  Some tests of basic locking mechanisms provided by the
    ;; filesystem are performed during 'make install'.  However, these
    ;; are performed before the actual build process.
    (build-system gnu-build-system)
    (inputs `(("exim" ,exim)))
    (home-page "http://www.procmail.org/")
    (synopsis "Versatile mail delivery agent (MDA)")
    (description "Procmail is a mail delivery agent (MDA) featuring support
for a variety of mailbox formats such as mbox, mh and maildir.  Incoming mail
can be sorted into separate files/directories and arbitrary commands can be
executed on mail arrival.  Procmail is considered stable, but is no longer
maintained.")
    (license gpl2+))) ;; procmail allows to choose the
                      ;; nonfree Artistic License 1.0
                      ;; as alternative to the GPL2+.
                      ;; This option is not listed here.

(define-public khard
  (package
    (name "khard")
    (version "0.9.0")
    (source (origin
              (method url-fetch)
              (uri (pypi-uri name version))
              (sha256
               (base32
                "0y83rji4f270hbb41m4jpr0z3yzvpvbsl32mpg9d38hlydw8fk1s"))))
    (build-system python-build-system)
    (arguments
      `(#:python ,python-2 ; only python-2 is supported.
        #:phases
        (modify-phases %standard-phases
          (add-before 'build 'disable-egg-compression
            ;; Do not compress the egg.
            (lambda _
              (let ((port (open-file "setup.cfg" "a")))
                (display "\n[easy_install]\nzip_ok = 0\n"
                         port)
                (close-port port)
                #t)))
          (add-after 'install 'install-doc
            (lambda* (#:key outputs #:allow-other-keys)
              (let* ((out (assoc-ref outputs "out"))
                     (doc (string-append out "/share/doc/khard")))
                (copy-recursively "misc/khard" doc)))))))
    (native-inputs
     `(("python2-setuptools" ,python2-setuptools)))
    (propagated-inputs
     `(("python2-vobject" ,python2-vobject)
       ("python2-pyyaml" ,python2-pyyaml)
       ("python2-atomicwrites" ,python2-atomicwrites)
       ("python2-configobj" ,python2-configobj)))
    (synopsis "Console address book using CardDAV")
    (description "Khard is an address book for the console.  It creates, reads,
modifies and removes CardDAV address book entries at your local machine.  For
synchronizing with a remote address book, @command{vdirsyncer} is recommended.
Khard can also be used from within the email client @command{mutt}.")
    (home-page "https://github.com/scheibler/khard")
    (license gpl3+)))

(define-public perl-mail-spf
 (package
  (name "perl-mail-spf")
  (version "v2.9.0")
  (source
    (origin
      (method url-fetch)
      (uri (string-append
             "mirror://cpan/authors/id/J/JM/JMEHNLE/mail-spf/Mail-SPF-"
             version
             ".tar.gz"))
      (sha256
        (base32
          "0qk1rfgfm5drj4iyniiabrasrpqv570vzhgz66lwgb67y4amkjv1"))))
  (build-system perl-build-system)
  (native-inputs
    `(("perl-module-build" ,perl-module-build)
      ("perl-net-dns-resolver-programmable"
       ,perl-net-dns-resolver-programmable)))
  (arguments
   `(#:phases (modify-phases %standard-phases
       (add-before 'configure 'modify-Build.PL
         (lambda* (#:key outputs #:allow-other-keys)
           (substitute* "Build.PL"
             (("'/usr/sbin'") (string-append "'"
                                             (assoc-ref outputs "out")
                                             "/sbin'")))
             #t)))))
  (inputs
    `(("perl-error" ,perl-error)
      ("perl-net-dns" ,perl-net-dns)
      ("perl-netaddr-ip" ,perl-netaddr-ip)
      ("perl-uri" ,perl-uri)))
  (home-page
    "http://search.cpan.org/dist/Mail-SPF")
  (synopsis
    "Perl implementation of Sender Policy Framework")
  (description "Mail::SPF is the Sender Policy Framework implemented
in Perl.")
  (license bsd-3)))

(define-public mb2md
  (package
    (name "mb2md")
    (version "3.20")
    (source (origin
              (method url-fetch)
              (uri (string-append
                    "http://batleth.sapienti-sat.org/projects/mb2md/mb2md-"
                    version ".pl.gz"))
              (sha256
               (base32
                "0bvkky3c90738h3skd2f1b2yy5xzhl25cbh9w2dy97rs86ssjidg"))))
    (build-system trivial-build-system)
    (arguments
     '(#:modules ((guix build utils))
       #:builder
       (begin
         (use-modules (guix build utils))
         (let* ((source (assoc-ref %build-inputs "source"))
                (out (assoc-ref %outputs "out"))
                (bin (string-append out "/bin"))
                (perl (assoc-ref %build-inputs "perl"))
                (gzip (assoc-ref %build-inputs "gzip"))
                (perl-timedate (assoc-ref %build-inputs "perl-timedate"))
                (perl5lib (string-append perl-timedate "/lib/perl5/site_perl")))
           (mkdir-p bin)
           (with-directory-excursion bin
             (copy-file source "mb2md.gz")
             (system* (string-append gzip "/bin/gzip") "-d" "mb2md.gz")
             (substitute* "mb2md"
               (("#!/usr/bin/perl")
                (string-append "#!/usr/bin/perl -I " perl5lib)))
             (patch-shebang "mb2md" (list (string-append perl "/bin")))
             (chmod "mb2md" #o555))
           #t))))
    (native-inputs `(("gzip", gzip)))
    (inputs `(("perl" ,perl)
              ("perl-timedate" ,perl-timedate)))
    (home-page "http://batleth.sapienti-sat.org/projects/mb2md/")
    (synopsis "Mbox to maildir converter")
    (description
     "Mb2md is a Perl script that takes one or more mbox format files and
converts them to maildir format directories.")
    (license public-domain)))

(define-public mpop
  (package
    (name "mpop")
    (version "1.2.5")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "http://downloads.sourceforge.net/mpop/mpop-"
                           version ".tar.xz"))
       (sha256
        (base32
         "0n0ij258kn8lfa6nyr6l6plc4hf1wvyf1hkwicvdbjqdqrgjnq81"))))
    (build-system gnu-build-system)
    (inputs
     `(("gnutls" ,gnutls)
       ("libidn" ,libidn)))
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (arguments
     `(#:configure-flags (list "--with-tls=gnutls")))
    (home-page "http://mpop.sourceforge.net/")
    (synopsis "POP3 mail client")
    (description "mpop is a small and fast POP3 client suitable as a
fetchmail replacement.

mpop supports multiple accounts, header based mail filtering, delivery
to mbox files, maildir folders or a Mail Delivery Agent (MDA),
TLS/SSL, several authentication methods, Internationalized Domain
Names (IDN) and SOCKS proxies.")
    (license gpl3+)))

(define-public opensmtpd
  (package
    (name "opensmtpd")
    (version "5.9.2p1")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://www.opensmtpd.org/archives/"
                                  name "-" version ".tar.gz"))
              (sha256
               (base32
                "07d7f1m5sxyz6mkk228rcm7fsf7350994ayvmhgph333q5rz48im"))))
    (build-system gnu-build-system)
    (inputs
     `(("libressl" ,libressl)
       ("zlib" ,zlib)
       ("libevent" ,libevent)
       ("libasr" ,libasr)
       ("bdb" ,bdb)
       ("linux-pam" ,linux-pam)))
    (native-inputs
     `(("bison" ,bison)))
    (arguments
     `(#:configure-flags (list "--with-table-db" "--localstatedir=/var"
                               "--with-user-smtpd=smtpd" "--with-user-queue=smtpq"
                               "--with-group-queue=smtpq")
       #:phases
       (modify-phases %standard-phases
         ;; OpenSMTPD provides a single utility smtpctl to control the daemon and
         ;; the local submission subsystem.  To accomodate systems that require
         ;; historical interfaces such as sendmail, newaliases or makemap, the
         ;; smtpctl utility can operate in compatibility mode if called with the
         ;; historical name.
         (add-after 'install 'install-compabilitymode
           (lambda _
             (let* ((out (assoc-ref %outputs "out"))
                    (sbin (string-append out "/sbin/")))
               (symlink "smtpctl" (string-append sbin "makemap"))
               (symlink "smtpctl" (string-append sbin "sendmail"))
               (symlink "smtpctl" (string-append sbin "send-mail"))
               (symlink "smtpctl" (string-append sbin "newaliases"))
               (symlink "smtpctl" (string-append sbin "mailq"))))))))
    (synopsis "Lightweight but fully featured SMTP daemon from OpenBSD")
    (description
     "OpenSMTPD is an implementation of the server-side SMTP protocol, with
some additional standard extensions.  It allows ordinary machines to exchange
e-mails with other systems speaking the SMTP protocol.")
    (home-page "https://www.opensmtpd.org")
    (license (list bsd-2 bsd-3 bsd-4 (non-copyleft "file://COPYING")
                   public-domain isc openssl))))

(define-public opensmtpd-extras
  (package
    (name "opensmtpd-extras")
    (version "5.7.1")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://www.opensmtpd.org/archives/"
                                  name "-" version ".tar.gz"))
              (sha256
               (base32
                "1kld4hxgz792s0cb2gl7m2n618ikzqkj88w5dhaxdrxg4x2c4vdm"))))
    (build-system gnu-build-system)
    (inputs
     `(("libressl" ,libressl)
       ("libevent" ,libevent)
       ("libasr" ,libasr)
       ("python-2" ,python-2)
       ("opensmtpd" ,opensmtpd)
       ("perl" ,perl)
       ("lua" ,lua)
       ("postgresql" ,postgresql)
       ("mariadb" ,mariadb)
       ("sqlite" ,sqlite)
       ("linux-pam" ,linux-pam)))
    (native-inputs
     `(("bison" ,bison)
       ("pkg-config" ,pkg-config)
       ("groff" ,groff)
       ("automake" ,automake)
       ("autoconf" ,autoconf)))
    (arguments
     `(#:configure-flags (list
                          "--with-filter-clamav"    "--with-filter-dkim-signer"
                          "--with-filter-dnsbl"     "--with-filter-lua"
                          "--with-filter-monkey"    "--with-filter-pause"
                          "--with-filter-perl"      "--with-filter-python"
                          "--with-filter-regex"     "--with-filter-spamassassin"
                          "--with-filter-stub"      "--with-filter-trace"
                          "--with-filter-void"
     
                          "--with-queue-null"       "--with-queue-python"
                          "--with-queue-ram"        "--with-queue-stub"

                          "--with-scheduler-python" "--with-scheduler-ram"
                          "--with-scheduler-stub"

                          "--with-table-ldap"       "--with-table-mysql"
                          "--with-table-passwd"     "--with-table-postgres"
                          "--with-table-python"     "--with-table-socketmap"
                          "--with-table-sqlite"     "--with-table-stub"
                          ;;"--with-table-redis"    ; TODO: package hiredis

                          "--with-user=smtpd"       "--with-privsep-user=smtpd"
                          "--localstatedir=/var"    "--sysconfdir=/etc"
                          "--with-lua-type=lua"     ; can use lua or luajit
     
                          (string-append "--with-python="
                                         (assoc-ref %build-inputs "python-2"))
                          (string-append "--with-lua="
                                         (assoc-ref %build-inputs "lua")))))
    (license (list bsd-2 bsd-3 bsd-4 non-copyleft
                   public-domain isc openssl))
    (synopsis "Extra tables, filters, and various other addons for OpenSMTPD")
    (description
     "This package provides extra tables, filters, and various other addons
for OpenSMTPD to extend its functionality.")
    (home-page "https://www.opensmtpd.org")))