- HTTP (WWW)
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The number one Open Source IMAP and POP3 server for Linux/UNIX operating systems
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An interactive mail system based on Elm 2.4
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An (E)SMTP, POP3, IMAP4, Webmail server
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The Cyrus IMAP server is generally intended to be run on sealed systems, where normal users are no...
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Courier-IMAP is a fast, scalable, enterprise IMAP server that uses Maildirs.
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A standards-based webmail package written in PHP.
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Easy to use AJAX-powered interface to access your email
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An open source, intuitive and easy-to-use test suite of email servers for testing purposes