The documentation of the getmail service’s delete_after setting is
confusing and appears to contradict upstream documentation at
<http://pyropus.ca/software/getmail/configuration.html>.

I am not sure, but the code in the getmail file in the getmail source
code also appears to call destination.deliver_message before deleting,
in agreement with upstream.

Can someone with knowledge check?  Shall I push the attached patch?

Regards,
Florian