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

  • Keep company data safe with Chrome Enterprise Icon
    Keep company data safe with Chrome Enterprise

    Protect your business with AI policies and data loss prevention in the browser

    Make AI work your way with Chrome Enterprise. Block unapproved sites and set custom data controls that align with your company's policies.
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    Build gen AI apps with an all-in-one modern database: MongoDB Atlas

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  • 1
    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: 25 This Week
    Last Update:
    See Project
  • 2
    hMailServer is a SMTP/POP3/IMAP server for Windows. Data is stored in MySQL/MSSQL database and is easily accessed using the COM library. Project info, trackers and downloads has moved to www.hmailserver.com.
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    Downloads: 10 This Week
    Last Update:
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  • 3
    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: 3 This Week
    Last Update:
    See Project
  • 4
    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: 3 This Week
    Last Update:
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  • Build Securely on Azure with Proven Frameworks Icon
    Build Securely on Azure with Proven Frameworks

    Lay a foundation for success with Tested Reference Architectures developed by Fortinet’s experts. Learn more in this white paper.

    Moving to the cloud brings new challenges. How can you manage a larger attack surface while ensuring great network performance? Turn to Fortinet’s Tested Reference Architectures, blueprints for designing and securing cloud environments built by cybersecurity experts. Learn more and explore use cases in this white paper.
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  • 5
    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: 1 This Week
    Last Update:
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  • 6
    Remote Mail is a multi-account Webmail manager. Quick as a webmail, yet powerful like a POP Email client, it lets you access via Web many POP accounts at once. The ideal companion for people who want to quickly read their mail everywhere they are.
    Downloads: 1 This Week
    Last Update:
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  • 7
    CRM aka Customer Relationship Management are applications that manage customers in relation to enterprise life. Our project, Customer Touch CRM, is a CRM application for small/medium firms. The application is easy to use and install.
    Downloads: 0 This Week
    Last Update:
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  • 8
    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: 0 This Week
    Last Update:
    See Project
  • 9
    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: 0 This Week
    Last Update:
    See Project
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  • 10
    Mail-It
    A HTML newsletter composer for Linux. It is a simple GUI written on Python for create and send advanced HTML newsletter.
    Downloads: 0 This Week
    Last Update:
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  • 11
    Mailster is a project aimed at testing software mail capabilities. It provides a mail server container to test emails sent by your apps without rewriting your application code.
    Downloads: 0 This Week
    Last Update:
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  • 12
    WE HAVE MOVED OFF SOURCEFORGE. PLEASE VISIT http://openwebmail.acatysmoof.com. OpenWebMail is a full-featured webmail, addressbook, calendar, and webdisk system that is designed to manage very large mail folder files in a quick and memory efficient w
    Downloads: 0 This Week
    Last Update:
    See Project
  • 13
    Web-based administration tool for domains, emails and newsletters based oh PHP + PostgreSQL + postfix
    Downloads: 0 This Week
    Last Update:
    See Project
  • 14
    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: 0 This Week
    Last Update:
    See Project
  • 15
    The PigeonAir Project aims at releasing an Open and Free GPL solution to easily build up clustered, scalable and modular email services, targetted to satisfy all ISP needs.
    Downloads: 0 This Week
    Last Update:
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  • 16
    Semplice interfaccia GUI intuitiva che invia posta elettronica facendo uso di Blat da riga di comando. L'applicazione è sviluppata per windows in Visual Basic 6.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 17
    Email client for access to IMAP server, developed in C#.
    Downloads: 0 This Week
    Last Update:
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  • 18
    Mailserver for Win* Platform.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 19
    this tool hack facebook account
    Downloads: 0 This Week
    Last Update:
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  • 20
    a fast email client for console that support pop3 and smtp protocols also with ssl connections and more paranoic futures...
    Downloads: 0 This Week
    Last Update:
    See Project
  • 21
    Pop3 server with OS/2 PM management interface and CGI applications for mailbox setup.
    Downloads: 0 This Week
    Last Update:
    See Project
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