Truly, email is (thankfully) mostly unspoiled as a protocol since it’s beginning. Other than minor improvements and additions like HTML and spam filters and the like, anyone can host an email service and interface with anyone else on the Internet with the same protocol.
If xmpp and matrix are included, why not include email?
Truly, email is (thankfully) mostly unspoiled as a protocol since it’s beginning. Other than minor improvements and additions like HTML and spam filters and the like, anyone can host an email service and interface with anyone else on the Internet with the same protocol.