10

8

6

4

2


9.2

4.0

9.0
0.2

8.5

3.5

8.3

7.3

5.5

8.9

5.5
0.0

13 Mail Transfer Agents software solutions and projects

  • Postal

    9.2 4.0 Ruby
    A fully featured open source mail delivery platform for incoming & outgoing e-mail
  • MailHog

    9.0 0.2 Go
    Small Golang executable which runs an SMTP MTA gateway that accepts all mail and displays in web interface. Useful for debugging or development.
  • Scout APM uses tracing logic that ties bottlenecks to source code so you know the exact line of code causing performance issues and can get back to building a great product faster.
    Sponsored scoutapm.com
  • MailCatcher

    8.5 3.5 L5 Ruby
    Ruby gem that deploys a simply SMTP MTA gateway that accepts all mail and displays in web interface. Useful for debugging or development.
  • Haraka

    8.3 7.3 L3 JavaScript
    A high-performance, pluginable SMTP server written in JavaScript.
  • Exim

    5.5 8.9 L1 C
    Message transfer agent
  • Maildrop

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

    4.7 7.5 L2 C
    Secure SMTP server implementation from the OpenBSD project.
  • Slimta

    3.3 2.1 L5 Python
    Mail Transfer Library built on Python.
  • Courier MTA

    2.1 6.7 L1 C
    Fast, scalable, enterprise mail/groupware server providing ESMTP, IMAP, POP3, webmail, mailing list, basic web-based calendaring and scheduling services.
  • Qmail

    1.0 0.0
    Secure Sendmail replacement.
  • chasquid

    -
    SMTP
  • Postfix

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

    -
    Message transfer agent

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