List of mail server software

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

Product statistics[edit]

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]



Mail filtering[edit]

Mail server packages[edit]

See also[edit]


  1. ^ a b "Mail (MX) Server Survey". Retrieved 17 December 2018.
  2. ^ Security Space Mail (MX) Server Survey, April 1, 2014.
  3. ^ "Information Protection". Proofpoint. Retrieved 2017-08-30.