Based on our record, sup should be more popular than Postfix. It has been mentiond 2 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Read the documentation on postfix.org and/or buy one of the many available Postfix books (it really helps to understand the Postfix philosophy). Source: about 3 years ago
Sup is also “a console-based email client for people with a lot of email”: https://sup-heliotrope.github.io/. - Source: Hacker News / about 1 year ago
A long time ago I used https://sup-heliotrope.github.io/ , which is sort of mutt with a gmail approach to email. Being a curses-based email client, it of course lets you shell out to vim for writing your email. Source: about 1 year ago
iRedMail - A fully fledged, free email server solution, an open source project (GPL v2).
Zenly - Zenly is a GPS tracker to locate your friends in realtime.
Zimbra - Zimbra is trusted by over 500 million users to increase productivity with a complete set of collaboration tools while maintaining total control over security and privacy.
NeoMutt - NeoMutt is a command-line mail reader. It's a version of https://alternativeto.
Exim - Exim is a message transfer agent (MTA) developed at the University of Cambridge for use on Unix systems connected to the Internet.
Mutt - Mutt is a small but very powerful text-based mail client for Unix operating systems.