This is a list of mail servers: mail transfer agents, mail delivery agents, and other computer software which provide e-mail services.
Product statistics
According to one survey, sendmail, Microsoft Exchange Server, Postfix, and Exim together control over 85% of market share for SMTP service.[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
See also
References
External links