Email Software for Windows

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

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  • 1
    phpList

    phpList

    Powerful Open Source Email Marketing app with analytics & segmentation

    phpList delivers Open Source email marketing, including analytics, list segmentation, content personalisaton and bounce processing. Extensive technical features and a secure and stable codebase are the result of over 17 years of continuous development. Used in 95 countries, available in 20+ languages, and used to send 25 billion email campaigns last year. Deploy it with your own SMTP server, or get a free hosted account at http://phplist.com.
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    Downloads: 526 This Week
    Last Update:
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  • 2
    SquirrelMail
    SquirrelMail is a PHP-based Web email client. It includes built-in pure PHP support for IMAP and SMTP, and renders all pages in pure HTML 4.0 for maximum compatibility across browsers. It has strong MIME support and a flexible plugin system.
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    Downloads: 357 This Week
    Last Update:
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  • 3

    PHP Address Book

    Simple, web-based address & phone book

    Simple, web-based address & phone book, contact manager, organizer. Groups, addresses, e-Mails, phone numbers & birthdays. vCards, LDIF, Excel, iPhone, Gmail & Google-Maps supported. PHP / MySQL based.
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    Downloads: 142 This Week
    Last Update:
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  • 4
    NOCC
    NOCC is a simple and fast Webmail client which can handle POP3 and IMAP mailboxes and sends email via SMTP. It is written with PHP, has low requirements (no database, frames). Features multi-language support, MIME attachments, displays HTML messages. The installation guide comes with the source code: https://sourceforge.net/p/nocc/code/HEAD/tree/trunk/webmail/docs/INSTALL If you encounter problems or bugs you can always try the current HEAD version: https://sourceforge.net/p/nocc/code/HEAD/tarball?path= Questions, bug reports or support requests are very welcome: https://sourceforge.net/p/nocc/_list/tickets Alternative source code repository: https://github.com/oheil/NOCC
    Downloads: 10 This Week
    Last Update:
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    PRTG Catches Network Issues Before They Cause Downtime

    Threshold-based alerts flag problems early, so your team can act before users notice, not after.

    Reactive troubleshooting usually means hearing about a problem from frustrated users, not your monitoring tool. PRTG sets threshold-based alerts across devices, servers and applications, notifying your team by email, SMS or push the moment a metric crosses a set limit. That means catching a failing disk or overloaded server before it becomes an outage and getting time back from firefighting. Start a free trial and set your first alerts today.
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  • 5
    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: 13 This Week
    Last Update:
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  • 6
    Googsystray is a system tray app for Google Voice, GMail, Google Calendar, Google Reader, and Google Docs. It notifies on new messages, alerts, etc., and provides basic services quickly.
    Downloads: 8 This Week
    Last Update:
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  • 7
    Mail Notifier

    Mail Notifier

    Mail Notifer for Windows

    Mail Notifier is free, modern email notifier with the latest user interface trends for Windows 10/11. It supports multiple accounts and IMAP/POP3 protocols. Enjoy customizable notifications, message previews, and more, all in 34 languages! For more details, please refer to the readme.txt file (Files tab, description below). Note: Gmail support is currently unavailable due to verification requirements by Google. Note: Outlook.com support is currently unavailable due to moving to OAuth2 authentication from login/password at Outlook servers.
    Downloads: 20 This Week
    Last Update:
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  • 8
    EGroupware Enterprise Collaboration
    EGroupware has moved to Github, please find all our downloads there: https://github.com/EGroupware/egroupware/releases EGroupware is a multi-user, web-based groupware suite. Currently available modules include: email, addressbook, calendar, infolog (notes, to-do's, phone calls), content management, wiki, project management, tracker, timesheet, knowledge base, CalDAV/CardDAV
    Downloads: 3 This Week
    Last Update:
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  • 9
    CuteFlow is a webbased document circulation/workflow tool. Users are able to define "documents" which are send step by step to every user in a list. It's an electronical way for doing (i.e. internal) document circulations.
    Downloads: 3 This Week
    Last Update:
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  • 10
    FUDforum
    FUDforum is a super fast and scalable discussion forum. It is highly customizable and supports unlimited members, forums, posts, topics, polls & attachments. It can import XML Feeds and sync with USENET groups and Mailing Lists (bi-directional).
    Downloads: 3 This Week
    Last Update:
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  • 11
    Thunderbird-Tray is a system tray launcher tool for Mozilla Thunderbird, the popular e-mail client. You can use TB-Tray to hide Thunderbird to the tray while you don't need it. When you click the tray icon, TB-Tray will restore Thunderbird.
    Downloads: 4 This Week
    Last Update:
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  • 12
    Lurker is a mailing list archiver designed for capacity, speed, simplicity, and configurability in that order. Noteworthy features include: google-style searching on all fields, chronology preserving threads, multilingual, and attachment support.
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    Downloads: 4 This Week
    Last Update:
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  • 13
    RainLoop Webmail (PHP)

    RainLoop Webmail (PHP)

    Simple, modern & fast web-based email client

    Modest system requirements, decent performance, simple installation and upgrade, no database required - all these make RainLoop Webmail a perfect choice for your email solution.
    Downloads: 2 This Week
    Last Update:
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  • 14
    KTMine is a clone of the Windows' MineSweeper game with advanced features yet remaining light-weighted. The project was initiated by creating a solubility-ensured version with a fast algorithm, but now is extended to implement nicer operations.
    Downloads: 1 This Week
    Last Update:
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  • 15
    mailredirect

    mailredirect

    Allow to redirect (a.k.a. "remail") mail messages to other recipients

    The Mailredirect extension for Mozilla Thunderbird and Mozilla SeaMonkey adds the ability to redirect one or more email messages to one or more recipients. The feature of email redirecting is also known as remailing or resending. The extension is an answer for https://bugzil.la/12916
    Downloads: 1 This Week
    Last Update:
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  • 16
    AfterLogic WebMail Lite .NET
    Free and easy-to-use webmail script with AJAX interface. Supports POP3/IMAP accounts, SMTP, SSL. Users can check and send mail, use address book. Skins, non-English languages, UTF-8. MS SQL/MySQL/MS Access backends supported.
    Downloads: 0 This Week
    Last Update:
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  • 17
    AfterLogic WebMail Lite 7
    AfterLogic WebMail Lite PHP is a free AJAX webmail application. Users can receive, view, manage, compose, and send email through web interface (IMAP and SMTP supported). Source code included.
    Downloads: 0 This Week
    Last Update:
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  • 18
    Archive This for Thunderbird
    "Archive This" is an add-on for the Thunderbird email client that provides shortcuts for filing messages into folders rapidly and efficiently.
    Downloads: 0 This Week
    Last Update:
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  • 19
    Doxygemplate
    Doxygemplate is an accessory software which semi-automatically generates a template of Doxygen comment block for C/C++. Doxygemplate is text editor independent, since it uses clipboard for generating and editing template.
    Downloads: 0 This Week
    Last Update:
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  • 20
    HTML Viewer/ Composer Project for Mobile Device
    Downloads: 0 This Week
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  • 21
    IlohaMail is a PHP based lightweight full featured multilingual webmail program with IMAP and POP3 support. IlohaMail also includes a full-featured contacts manager, bookmarks manager, and scheduler.
    Downloads: 0 This Week
    Last Update:
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  • 22
    LED Lens Information Network
    Downloads: 0 This Week
    Last Update:
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  • 23
    An OpenSource Software Release Code based on Web using PHP, JS, AJAX and others....
    Downloads: 0 This Week
    Last Update:
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  • 24
    Memba Velodoc Outlook Add-in lets users send large files from within Microsoft Outlook 2003 or above using various server platforms including Velodoc XP Edition, Velodoc Enterprise Edition, BITS servers, FTP servers, UNC file shares and Amazon S3.
    Downloads: 0 This Week
    Last Update:
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  • 25
    The Mobility Project wants to make communication simplier and more secure. We use Free (as in Freedom) Software to create tools that are powerful, but also intuitive.
    Downloads: 0 This Week
    Last Update:
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