10

8

6

4

2


9.2

6.0
Postal

9.1
0.0
MailHog

8.0

5.2
MailCatcher

7.9

7.3
Haraka

5.5
0.0
Maildrop

5.2

9.6
Exim

14 Mail Transfer Agents software solutions and projects

  • Postal

    9.2 6.0 Ruby
    📮 A fully featured open source mail delivery platform for incoming & outgoing e-mail

  • MailHog

    9.1 0.0 Go
    Web and API based SMTP testing

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  • MailCatcher

    8.0 5.2 L5 Ruby
    Catches mail and serves it through a dream.

  • Haraka

    7.9 7.3 L3 JavaScript
    A fast, highly extensible, and event driven SMTP server

  • Maildrop

    5.5 0.0 CSS
    DISCONTINUED. Disposable email SMTP server, also useful for development.

  • Exim

    5.2 9.6 L1 C
    DISCONTINUED. Exim Mail Transport Agent - source, testsuite and documentation

  • OpenSMTPD

    4.6 7.3 L2 C
    This is official OpenSMTPD Portable repository. Forks, pull requests and other contributions are welcome!

  • Slimta

    2.9 2.8 L5 Python
    Python libraries to send, receive, and queue email.

  • Courier MTA

    2.2 8.1 L1 C
    Courier Mail Server

  • Lightmeter

    1.0 0.0
    Lightmeter uses GitLab, not GitHub -- find repos at: https://gitlab.com/lightmeter

  • Qmail

    1.0 0.0
    Bind to different local ip addresses depending on the domain part of the sender argument when using `qmail-remote`.

  • Sendmail

    -
    Message transfer agent

  • chasquid

    -
    SMTP

  • Postfix

    -
    Fast, easy to administer, and secure Sendmail replacement.

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