[CalRobert]

Once upon a time I tried to adapt Mailvelope to encrypt FB messages, for what it's worth. But that was a long, long, LONG time ago.

https://mailvelope.com/en/

[stupidmanager]

I used mailvelope for the longest time as a gmail user until I found a better mail app with gpg support. It was pretty slick last time I used it.

Shamefully I also turned on the pgp messages from Facebook. I never found value with it, but to this day it’s still enabled and I don’t care to log in to Facebook to disable it.