Hypertwins Community:Plans/email hosting

There are two parts to this -- the actual email (POP3/IMAP/SMTP) server, which requires a client (either a web-based or desktop/mobile application), and a web interface for those who prefer it.

The basic email service is a well-understood (though poorly-documented) technology, and there are numerous reliable open-source packages for doing it.

The real issue is the web interface -- although there are some good ones out there, I have yet to find one that doesn't have substantial issues. Those I have tried include:

• Feng Office
• Group-Office
• Roundcube