Today I received an email with (raw) subject line
Subject: =?UTF-8?B?8J+Pi++4jw==?= A SALE to boost your
=?UTF-8?Q?workout=0D=0A?=
When displayed in Emacs in either unthreaded or tree mode, “^M” appears after the word “workout”, and the displayed line is split into two, like this:
Today 07:12 Jabra 🏋️ A SALE to boost your workout^M
(important inbox)
It would probably be a good idea to check for, and remove, carriage return characters in the subject line.
(Note that the message displays fine in the default threaded mode.)
Richard Stanton