qmail Alternatives

Postfix is a mail transfer agent (MTA) that routes and delivers electronic mail.

An open source mailserver suite.

The #1 email warming service to improve your deliverability by generating realistic and meaningful engagement to your emails. Easy-to-use solution to help you land in the main inbox instead of the spam folder.

Visit website paid $19.5 / Monthly (Pro)

Modoboa is a mail hosting and management platform including a modern and simplified Web User Interface.

Mailu is a simple yet full-featured mail server as a set of Docker images.

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.

Open-Xchange Server 6 is the most advanced Linux based Groupware solution f.

Simple, easy and secure mail server with a convenient and simple interface.

Axigen is an integrated email, calendaring & collaboration platform, built on a Linux mail server technology.

Eudora Internet Mail Server is a highly advanced internet mail system that supports the all kind of email systems and clients either it is IMAP, POP3, SMTP and much more.

Self hosted modern mail server

KerioConnect is a commercial mail and groupware server.

Postfix Admin is a web based interface used to manage mailboxes, virtual domains and aliases.

PowerMTA is an industrial-strength software for high-volume email delivery.