10

8

6

4

2


9.3

5.7
Postal

8.7
0.0
MailHog

8.5

6.3
MailCatcher

8.3

7.2
Haraka

5.4
0.1
Maildrop

5.2

9.5
Exim

13 Mail Transfer Agents software solutions and projects

  • Postal

    9.3 5.7 Ruby
    A fully featured open source mail delivery platform for incoming & outgoing e-mail

  • MailHog

    8.7 0.0 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

    8.5 6.3 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 7.2 L3 JavaScript
    A high-performance, pluginable SMTP server written in JavaScript.

  • Maildrop

    5.4 0.1 CSS
    Disposable email SMTP server, also useful for development.

  • Exim

    5.2 9.5 L1 C
    Message transfer agent

  • OpenSMTPD

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

  • Slimta

    3.2 3.3 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

    1.0 0.0
    Secure Sendmail replacement.

  • Sendmail

    - -
    Message transfer agent

  • Postfix

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

  • chasquid

    - -
    SMTP

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