FossaMail ( https://www.fossamail.org/ ) announced that they will be shutting down next month, and I must search for a replacement email program again. So far, my research for replacements found Claws Mail, and Slypheed, but are there any other stand alone email programs that are being updated? One other requirement is PGP support for encrypted messages.
(Score: 3, Informative) by NotSanguine on Sunday April 23 2017, @09:17AM
This article [wikipedia.org] should give you a bunch to choose from.
I use Thunderbird with Enigmail [enigmail.net] myself and it works pretty well. Enigmail runs as an add-on to Thunderbird and SeaMonkey.
I hope you find something which meets your needs.
No, no, you're not thinking; you're just being logical. --Niels Bohr