Post-Office Software for Linux

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Browse free open source Post-Office software and projects for Linux below. Use the toggles on the left to filter open source Post-Office software by OS, license, language, programming language, and project status.

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  • 1
    The Courier mail transfer agent (MTA) is an integrated mail/groupware server based on open commodity protocols such as ESMTP, IMAP, POP3, LDAP, SSL, and HTTP. Courier provides ESMTP, IMAP, POP3, Webmail, calendaring, and mailing list services.
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    Downloads: 334 This Week
    Last Update:
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  • 2
    Fetchmail - the mail-retrieval daemon

    Fetchmail - the mail-retrieval daemon

    Client daemon to move mail from POP and IMAP to your local computer

    Fetchmail is a mail retrieval daemon that can download messages from POP3, IMAP, ODMR and ETRN-based stores, with SSL/TLS security including certificate verification, and pass downloaded mail to a local SMTP or LMTP server, or a message delivery agent such as maildrop.
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    Downloads: 667 This Week
    Last Update:
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  • 3

    Isync

    mailbox synchronizer

    A command line utility for synchronizing remote IMAP mailboxes and local maildir-style mailboxes. This is useful for working in disconnected (off-line) mode, such as on a laptop, but also for mirroring mailboxes between servers.
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    Downloads: 354 This Week
    Last Update:
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  • 4
    IndiMail
    Highly scalable/configurable Messaging Platform allowing users in a domain to be distributed on multiple hosts, has multiple queues. Provides virtual domains/users in MySQL. Modern MSP class qmail replacement with ESMTP, POP3/IMAP, QMTP, QMQP support
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    Downloads: 41 This Week
    Last Update:
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  • 5
    SwithMail
    Send SMTP email silently from command line (CLI), or a batch file using Exchange, Gmail, Hotmail, or Yahoo! Plus. Supports XML settings files, variables, or all settings explicitly from the command line. Now supporting Exit Codes for batch file use (will return "0" for successful delivery, or "1" for error delivering) - handle your batch file accordingly.
    Downloads: 32 This Week
    Last Update:
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  • 6
    Convert Webmail to POP3.Is also included a SMTP/POP3 tunneling system that allow send and receive email in a private network HTTP PROXY based. All connection are plugin based. Over 450 email server supported and tested, GMAIL POP3/SMTP over Proxy Network.
    Downloads: 7 This Week
    Last Update:
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  • 7
    Columba
    Columba is an email client written in Java, featuring a user-friendly graphical interface with wizards and internalionalization support. Its a powerful mail management tool with features to enhance your productivity and communication.
    Downloads: 11 This Week
    Last Update:
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  • 8
    Hastymail
    Hastymail is a fast, secure, rfc-compliant, cross-platform IMAP/SMTP client application written in PHP providing a clean web interface for sending and reading E-mail. This version of Hastymail is no longer being developed. We are now working on a new version, Hastymail 3, AKA, "Cypht". http://cypht.org
    Downloads: 7 This Week
    Last Update:
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  • 9
    New Maintainer wanted! I'm looking for a new maintainer for this project because I'm not able to attend it anymore. If you want to help please write to kuddel-fl. KShowmail is a POP3 mail checker for the KDE with these features: show number, size and more information about mails on pop3 servers in a list view, show the mail headers or complete mails, delete unwanted mail from server by configurable filters.
    Downloads: 5 This Week
    Last Update:
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  • 10
    ZMail allows you to send email from anyone, to anyone. You can use ZMail to send fake or anonymous emails. Have fun!
    Downloads: 7 This Week
    Last Update:
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  • 11
    Mailcheck is a simple, command line, configurable tool that allows multiple mailboxes to be checked for the existence of new mail messages. It supports both mbox and maildir-style mailboxes. It also supports remote POP3 and IMAP mailboxes.
    Downloads: 8 This Week
    Last Update:
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  • 12
    An IMAP E-mail client for X-Windows written with GTK. Supports IMAP with and without SSL.
    Downloads: 4 This Week
    Last Update:
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  • 13
    Java SMTP/POP EMail Server
    Provide an Open Source Java Email Server that supports POP3/SMTP.
    Downloads: 4 This Week
    Last Update:
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  • 14
    liberopops is useful for users of Libero provider who cannot read email due to its change of policy. It acts as a POP3 server which interfaces itself to the webmail service still available.
    Downloads: 6 This Week
    Last Update:
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  • 15
    P3Scan is a fully transparent scanning proxy-server for email clients. It provides scanning of incoming/outgoing email messages for Virus''s, Worms, Trojans, Spam, and harmfull attachments. It can also parse messages for web-bugs.
    Downloads: 5 This Week
    Last Update:
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  • 16
    Quinsonnas Mail, a PHP4+/PEAR Web email client, retrieves mail from POP, IMAP, and NNTP server inboxes into a MySQL database. Mail is sent via SMTP, Sendmail, or PHP. MIME emails are supported as well. Contacts and lists are stored for composing email.
    Downloads: 5 This Week
    Last Update:
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  • 17
    GreenMail is an intuitive and easy-to-use test suite of email servers for testing purposes. Supports SMTP, POP3, IMAP with SSL socket support, and configurable user accounts and credentials. All in 100% Java. WE'VE MOVED TO GIT HUB: https://github.com/greenmail-mail-test/greenmail
    Downloads: 2 This Week
    Last Update:
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  • 18
    Hedwig Mail server
    Hedwig is an open source IMAP, SMTP, POP3 server written in Java, designed with ease of installation and configuration in mind. Hedwig enables storage of mail message headers in a relational database(MySQL or Oracle) and mail messages in a file system. Visit http://hwmail.sourceforge.net/ for more information.
    Downloads: 2 This Week
    Last Update:
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  • 19
    Heirloom mailx (formerly known as "nail") is intended provide the functionality of the POSIX mailx command with additional support for MIME messages, IMAP (including caching), POP3, SMTP, S/MIME, message threading/sorting, scoring, and filtering.
    Downloads: 2 This Week
    Last Update:
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  • 20
    jwSMTP, Send email programmatically (C++ code/lib). Linux, BSD, Windows etc. Attachments, Multiple recipients, Cc/Bcc recipients supported. MX lookup or send to an SMTP server direct. LOGIN and PLAIN authentication now supported. Html or plain text forma
    Downloads: 2 This Week
    Last Update:
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  • 21
    Rumble Mail Server
    Rumble is a mail server suite for SMTP (ESMTPSA), HTTP, POP3 and IMAP4v1 with an extensive C/C++ and Lua API for scripting. It comes with support for SSL/TLS, SQLite and MySQL and has a web-based administration and webmail feature. Additional included modules feature greylisting, DNS blacklisting, SpamAssassin support and dynamic performance scaling as well as a multithreaded structure that allows for clustering of multiple servers for one or all domains, and with the ease of the Lua API, you can create your own new server mailing lists, CRM software, e-marketing and other extensions within minutes.
    Downloads: 1 This Week
    Last Update:
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  • 22
    Small program, which monitors email account via IMAPS (secure version of IMAP) protocol and inform user about new, unread messages. Coded in Java programming language.
    Downloads: 2 This Week
    Last Update:
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  • 23
    NetPop -- a Netscape / AOL Email Popper written in Java, much like YPOPs! for Yahoo mail and Mr Postman for Hotmail, that allows anyone to use a POP3 email client (Thunderbird, Eutora, Outlook, etc) with Netscape and AOL webmail.
    Downloads: 2 This Week
    Last Update:
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  • 24
    PHPMyWebHosting (PMWH) will provide a gui viewed in a browser, which lets you adminstrate postfix-sql-based (mySQL, PostGre) emailaddresses, Apache Virtual Hosts, DNS-zones etc. When completed, PHPMyWebHosting will provide a complete webhosting-Interface
    Downloads: 2 This Week
    Last Update:
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  • 25
    smm is a anti-spam, mail-shaper, delete-on-server software thought for users who have a slow dialup connection and are sick and tired of downloading 1MB a day of spam and Win32-worm-attached messages.
    Downloads: 2 This Week
    Last Update:
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