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 within Internet message handling services (MHS).

Product statistics[edit]

According to one survey, sendmail, Microsoft Exchange Server, Postfix, and Exim together control over 90% of market share for SMTP service in 2014.[1]

Another survey suggests a more balanced distribution, though it included hosted e-mail services such as Postini.[2]

These surveys are rather difficult to produce,[3] hence it is no surprise if they disagree.



Mail filtering[edit]

See also[edit]


  1. ^ Security Space Mail (MX) Server Survey, April 1, 2014.
  2. ^ MailChannels Mail Server Survey, 2006
  3. ^ Ken Simpson; Stas Bekman (2007). "Fingerprinting the World's Mail Servers". O'Reilly Media. Retrieved October 23, 2010.
  4. ^ "Information Protection". Proofpoint. Retrieved 2017-08-30.