Sendmail alternatives and similar tools

Based on the "Mail Servers" category.

Mail-in-a-Box

8.7 0.0 L3 Sendmail VS 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.
MailCatcher

7.5 0.0 L5 Sendmail VS MailCatcher

Catches mail and serves it through a dream.

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Haraka

7.3 0.0 L3 Sendmail VS Haraka

A fast, highly extensible, and event driven SMTP server
Dovecot

5.1 9.6 L3 Sendmail VS Dovecot

Dovecot mail server
Exim

4.8 0.0 L1 Sendmail VS Exim

Exim Mail Transport Agent - source, testsuite and documentation
Maildrop

4.6 0.0 Sendmail VS Maildrop

Open Source disposable email SMTP server, also useful for development.
OpenSMTPD

4.3 9.0 L2 Sendmail VS OpenSMTPD

This is official OpenSMTPD Portable repository. Forks, pull requests and other contributions are welcome!
snmp_mib_archive

3.0 0.0 Sendmail VS snmp_mib_archive

An archive of over 3000 unique SNMP MIBs
Qpopper

- Sendmail VS Qpopper

One of the oldest and most popular server implementations of POP3.
Postfix

- Sendmail VS Postfix

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

- Sendmail VS Qmail

Secure Sendmail replacement.
Cyrus IMAP/POP3

- Sendmail VS Cyrus IMAP/POP3

Intended to be run on sealed servers, where normal users are not permitted to log in.
iRedMail

- Sendmail VS iRedMail

Full-featured mail server solution based on Postfix and Dovecot.
Courier IMAP/POP3

- Sendmail VS Courier IMAP/POP3

Fast, scalable, enterprise IMAP and POP3 server.