Batteries-not-included PGP support has been pushed to aerc. See the following if you want to take it for a test drive:
https://lists.sr.ht/~sircmpwn/aerc/%3CC11JC39B2EUP.9Y18EIDU7UMO%40homura%3E
@sir can we get a mobile friendly version of lists?
@af it's a difficult problem. The answer is yes*
* eventually
* some restrictions apply
@af I don't give ETAs