friendica-addons/securemail
..
lang/C
templates
vendor
README.md
securemail.php

Secure Mail

Send notification mails to user encrypted with GPG. Each user can enable it and submit his public key under Settings-> Addon -> "Secure Mail" Settings.

Use 'openpgp-php' library, a pure PHP implementation of GPG/PGP. See project repo.

Need Friendica version > 3.3.2 to work.