OpenSMTPD VS Mailcow

Compare OpenSMTPD vs Mailcow and see what are their differences.

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OpenSMTPD Mailcow
18 181
477 7,963
1.3% 2.1%
9.1 9.4
3 days ago 10 days ago
C JavaScript
GNU General Public License v3.0 or later GNU General Public License v3.0 only
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.

OpenSMTPD

Posts with mentions or reviews of OpenSMTPD. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-09-09.

Mailcow

Posts with mentions or reviews of Mailcow. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2024-01-29.

What are some alternatives?

When comparing OpenSMTPD and Mailcow you can also consider the following projects:

Exim - Exim Mail Transport Agent - source, testsuite and documentation

Mail-in-a-Box - Mail-in-a-Box helps individuals take back control of their email by defining a one-click, easy-to-deploy SMTP+everything else server: a mail server in a box.

postfix - Postfix MTA by Wietse Venema

Mailu - Insular email distribution - mail server as Docker images

Haraka - A fast, highly extensible, and event driven SMTP server

iRedMail

Qmail - Bind to different local ip addresses depending on the domain part of the sender argument when using `qmail-remote`.

modoboa - Mail hosting made simple

Maildrop

docker-mailserver - A fullstack but simple mail server (SMTP, IMAP, LDAP, Antispam, Antivirus, etc.) using Docker. [Moved to: https://github.com/docker-mailserver/docker-mailserver]

Postal - 📮 A fully featured open source mail delivery platform for incoming & outgoing e-mail

docker-mailserver - Production-ready fullstack but simple mail server (SMTP, IMAP, LDAP, Antispam, Antivirus, etc.) running inside a container.