OpenSMTPD — Email MTA (Open Source)

OpenSMTPD is an open-source Email MTA solution from OpenBSD. Compare it against 3 other Email MTA tools on FreeSoftwareX — by features, licensing and price — and request a quote or demo free in 2026.

What is OpenSMTPD?

OpenSMTPD is open source — its source code is publicly available and free to use, modify and self-host, usually with an active community and no licensing fees. It is categorised under Email MTA and published by OpenBSD. Buyers typically evaluate OpenSMTPD when they need a dependable Email MTA option and want to weigh the trade-offs between free, open-source and paid tools before committing.

• Category: Email MTA
• Brand: OpenBSD
• License: Open Source

OpenSMTPD alternatives

If OpenSMTPD isn't the right fit, compare these Email MTA alternatives side by side:

Frequently asked questions

← All Email MTA · More from OpenBSD