Btw I use XMPP

Yes, I use XMPP now as my main communication platform next to e-mail (which you can either encrypt by using PGP with fingerprint 8A31 8CA0 1EA7 B381 or Tutanota) and this is fine for a couple of reasons. However the reasons why I chose XMPP over any other messaging platforms are the following. XMPP is [...]