Support for OpenPGP
There are many ways to support OpenPGP. The simple version is this:
- Add a form on the web site to allow user's to upload a public key.
- If public key exists, then all outgoing mail to that user will be encrypted.
- Optionally, we can require incoming messages are signed.
Equalit.ie, or someone, wrote a patch already for the backend sympa to support this. We just need to add it to the front end.