There are so many other problems with email that could be addressed by a new protocol, eg: spam, security. There are measures to address these issues more broa

There are so many other problems with email that could be addressed by a new protocol, eg: spam, security. There are measures to address these issues more broadly with SMTP, but they are not widely adopted, something that could be standardized in a new protocol, ie: encryption by default, message signing to prevent spoofing, encrypted transmission, etc.