2 self-hosted Postfix alternatives

Postfix is a popular proprietary tool in the mail servers space. These open-source apps let you replace Postfix with software you host and control yourself.

Best self-hosted Postfix alternatives

OpenSMTPD

Mail Servers

Secure and simple SMTP server from OpenBSD

Replaces Sendmail, Postfix

★ 579 Medium setup ISC

DragonFly Mail Agent

Mail Servers

Tiny mail transfer agent for outbound delivery

Replaces Sendmail, Postfix

★ 263 Easy setup BSD-3-Clause

Compare Postfix alternatives

DragonFly Mail Agent vs OpenSMTPD

Switching from Postfix

Moving off Postfix means trading a managed subscription for a service you run yourself. The payoff is ownership: no per-seat pricing, no vendor lock-in, and full control of your data. Start with the option above that matches your setup-difficulty comfort level — every app links to a detailed specs page and head-to-head comparisons.