List of mail server software

This is a list of mail server software: mail transfer agents, mail delivery agents, and other computer software which provide e-mail.

Product statistics

All such figures are necessarily estimates because data about mail server share is difficult to obtain; there are few reliable primary sources—and no agreed methodologies for its collection.

Surveys probing Internet-exposed systems typically attempt to identify systems via their banner, or other identifying features;[1] and report Postfix and exim as overwhelming leaders, with greater than 80% share between them.[2][1]

SMTP

POP/IMAP

Mail filtering

Mail server packages

See also

References


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