Postfix Admin
Postfix Admin is a web based interface used to manage mailboxes, virtual domains and aliases.
18 Alternatives To Postfix Admin
Kolab Community
Kolab Groupware is a secure, scalable, reliable, flexible, full-featured collaboration suite.
Mail-in-a-box
Mail-in-a-Box provides webmail and an IMAP/SMTP server for use with mobile devices and desktop mail software and also includes contacts and calendar synchronization.
Mailpile
Mailpile is a modern, fast web-mail client with user-friendly encryption and privacy features.
Microsoft Exchange Server
Microsoft Exchange Server is a messaging and collaborative software product developed by Microsoft.
NeutronMail
Self-hosted server for the ProtonMail client.
ProtonMail
Secure email with absolutely no compromises. Get your free encrypted email account today.
Roundcube
Web-based IMAP email client
Vesta Control Panel
– What I love about Vesta is that it’s fast and easy to use
Virtualmin
It includes numerous features not in the GPL version (like script installers, resellers, HTML editor, an improved UI, mobile access, spam and virus filtering).
Webmin
Webmin, Usermin, Virtualmin, Cloudmin, Linux, System Administration
Zimbra Collaboration Suite
Zimbra Collaboration is an open, secure collaboration tool for email, calendaring, tasks and more.
Zoho One
Zoho is an all-in-one online office suite.
django-cyradm
django-cyradm is a web interface to manage postfix controlling accounts, aliases and virtual…
iRedMail
A fully fledged, free email server solution, an open source project (GPL v2).
mailcow dockerized
An open source mailserver suite.