C Post-Office Software

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Browse free open source C Post-Office Software and projects below. Use the toggles on the left to filter open source C 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: 332 This Week
    Last Update:
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  • 2

    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: 289 This Week
    Last Update:
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  • 3
    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: 285 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: 25 This Week
    Last Update:
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  • 5
    FreePOPs is a webmail to pop3 conversion daemon. It is extensible to support other webmail using the scripting language LUA. See the homepage for supported webmails.
    Downloads: 26 This Week
    Last Update:
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  • 6
    YPOPs! is an application which emulates a POP3/SMTP mail server and provides free POP3 and SMTP access to Yahoo! Mail. It does not depend on Yahoo's POP3/SMTP mail server. You can use a mail client of your choice!
    Downloads: 14 This Week
    Last Update:
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  • 7
    ClamMail is POP3 email proxy for Windows with integrated ClamAV antivirus engine. ClamMail is an Windows antivirus that protects your PC from viruses transferred via mail. Works with Outlook,Thunderbird,Eudora and many others using popular POP3 protocol
    Downloads: 9 This Week
    Last Update:
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  • 8
    XCmail is a MIME and multi POP3 server capable mailtool for X11 using the Xclasses layout library. XCmail was designed completely object orientated and by this may be improved easily. <p> XCmail has its own server in the internet. Take a look on it.
    Downloads: 5 This Week
    Last Update:
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  • 9
    Modular POP3 daemon.
    Downloads: 2 This Week
    Last Update:
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  • 10
    Graphical OS Kernel compiled with gcc 4.6.1 and nasm 2.09.08
    Downloads: 2 This Week
    Last Update:
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  • 11
    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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  • 12
    Watch mailstores for changes and initiate mailbox syncs
    Downloads: 2 This Week
    Last Update:
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  • 13
    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: 1 This Week
    Last Update:
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  • 14
    Popthru provides discrete email monitoring. Useful for dial-up/ISP accounts.
    Downloads: 1 This Week
    Last Update:
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  • 15
    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: 1 This Week
    Last Update:
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  • 16
    p3c is a pop3 checker allowing you to inspect your mailbox before downloading and delete any unwanted messages. For you to choose wich messages to delete, p3c will show you the "To:", "From:" and "Subject:" portions of the mail.
    Downloads: 1 This Week
    Last Update:
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  • 17
    APOP + LDAP authentication patch for QMail (auth_pop) 1. POP & APOP authentication 2. Passwords in LDAP are stored encrypted
    Downloads: 0 This Week
    Last Update:
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  • 18
    This project aims to be a personal data storage and administration system. It will be an advanced system for information and electronic mail management. The server will be accessible to any IMAPv4 compatible mail client.
    Downloads: 0 This Week
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  • 19
    Checkpop is a POP3 command line interface for UNIX based operating systems.
    Downloads: 0 This Week
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  • 20
    Web-interface management for virtual domains, email-addresses and aliases for the courier mail server. Depends on MySQL and PhP
    Downloads: 0 This Week
    Last Update:
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  • 21
    Cyrus IMAPd is a popular IMAP server that surfaces a rich interface for extending its functionality. The Cyrus IMAPd Utilities project brings together maintenance utilities, graphical front-ends, and API handlers (such as notification daemons).
    Downloads: 0 This Week
    Last Update:
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  • 22
    FLOPP Project is an open POP Proxy. It supports many features, including commands filtering and logging, multiple cascaded proxies, in/out access lists, statistics, etc..
    Downloads: 0 This Week
    Last Update:
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  • 23
    GeoSync aims to add support for DPOP3 (extensions to POP3 to add IMAP-like features) to GNU-pop3d
    Downloads: 0 This Week
    Last Update:
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  • 24
    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: 0 This Week
    Last Update:
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  • 25
    An advanced qmail distribution based on qmail-sql which has SMTP, SMTPS, POP3, POP3S, IMAP, IMAPS services, a content scanner, spoofing protections, SMTP AUTH support, SMTP-after-POP/IMAP, PHP5 API, SPF support and much more...
    Downloads: 0 This Week
    Last Update:
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