10

8

6

4

2


9.2

5.3
Postal

8.8

2.3
MailHog

8.6

5.7
MailCatcher

8.3

6.9
Haraka

5.5
0.0
Maildrop

5.4

9.5
Exim

13 Mail Transfer Agents software solutions and projects

  • Postal

    9.2 5.3 Ruby
    A fully featured open source mail delivery platform for incoming & outgoing e-mail

  • MailHog

    8.8 2.3 Go
    Small Golang executable which runs an SMTP MTA gateway that accepts all mail and displays in web interface. Useful for debugging or development.

  • MailCatcher

    8.6 5.7 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 6.9 L3 JavaScript
    A high-performance, pluginable SMTP server written in JavaScript.

  • Maildrop

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

  • Exim

    5.4 9.5 L1 C
    Message transfer agent

  • OpenSMTPD

    4.4 9.2 L2 C
    Secure SMTP server implementation from the OpenBSD project.

  • Slimta

    3.4 2.2 L5 Python
    Mail Transfer Library built on Python.

  • Courier MTA

    1.8 6.4 L1 C
    Fast, scalable, enterprise mail/groupware server providing ESMTP, IMAP, POP3, webmail, mailing list, basic web-based calendaring and scheduling services.

  • Qmail

    1.1 0.0
    Secure Sendmail replacement.

  • Sendmail

    - -
    Message transfer agent

  • Postfix

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

  • chasquid

    - -
    SMTP

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