Alternatives to Courier for all platforms with any license

  • Thunderbird icon

    Thunderbird

    Thunderbird is a free, open source, cross-platform e-mail, news and instant messaging client. The project strategy is modeled after...

    Open Source Mac Windows Linux BSD Haiku

  • Postbox icon

    Postbox

    Postbox is an email application that helps you organize your work life and get stuff done. It has all the elegance and simplicity...

    Commercial Mac Windows

  • Claws Mail icon

    Claws Mail

    Claws Mail is an email client (and news reader), based on GTK+, featuring Quick response Graceful, and sophisticated...

    Open Source Windows Linux BSD Xfce

  • Sylpheed icon

    Sylpheed

    Sylpheed is a simple, lightweight but featureful, and easy-to-use e-mail client (mailer, MUA). Sylpheed runs on many systems such...

    Open Source Mac Windows Linux BSD

  • The Bat icon

    The Bat

    The Bat! is a secure email client software, built to protect your correspondence against third-parties.

    Commercial Windows

  • Mail icon

    Mail

    Windows 10 has Mail and Calendar apps already built in. With the Mail application you can now...

    Free Windows

  • Foxmail icon

    Foxmail

    Foxmail is a free POP3 and IMAP4 e-mail client in English and Chinese for Windows systems.

    Free Windows

  • Kontact icon

    Kontact

    Kontact is the integrated Personal Information Manager of KDE. Kontact suite unites mature and proven KDE PIM applications under...

    Open Source Windows Linux

  • iRedMail icon

    iRedMail

    A fully fledged, free email server solution, an open source project (GPL v2). Use official binary packages from Linux/BSD...

    Open Source Linux BSD Self-Hosted

  • Email.biz icon

    Email.biz

    Indian Webmail service allowing people to sign up for an @email.biz mail account. Cloud based Login and Multiple Login System give...

    Free Web / Cloud

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  • nPOPuk icon

    nPOPuk Discontinued

    nPOPuk is an ultra-small, but comprehensive, e-mail client that runs on a wide range of Windows-based operating systems

    Open Source Windows Windows Mobile

  • Mulberry icon

    Mulberry Discontinued

    Mulberry is a powerful, easy to use electronic mail (email) and calendar program that allows you to send, access, and manage email and...

    Open Source Mac Windows Linux

  • Columba icon

    Columba Discontinued

    Columba is an email client written in Java, featuring a user-friendly graphical interface with wizards and internalionalization...

    Open Source Mac Windows Linux BSD

  • i.Scribe (InScribe) icon

    i.Scribe (InScribe)

    Scribe is a small and fast email client with an intergrated contact database and calendar. It supports all the major internet mail...

    Freemium Mac Windows Linux Haiku

  • EmailTray icon

    EmailTray

    EmailTray is a smart email client and an email notifier for POP3 and IMAP email accounts, including Gmail, Hotmail, Yahoo mail and...

    Free Windows Android

  • Pegasus Mail icon

    Pegasus Mail

    Pegasus Mail is a free, standards-based electronic mail client suitable for use by single or multiple users on single computers or on...

    Free Windows

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  • IncrediMail icon

    IncrediMail Warning

    Advertising-supported email client for the Microsoft Windows operating system by IncrediMail Ltd. that offers the ability to add...

    Free Personal Windows

  • Ymail2 icon

    Ymail2

    yMail2 is a standalone email client for Windows (and Linux), available for free since 2003. Now with SSL support included so you can...

    Free Windows Linux

  • mail2web.com icon

    mail2web.com

    Check your email on the web using our Webmail Application. With mail2web.com you can check your email from anywhere using our...

    Free Web / Cloud

  • ProfiMail icon

    ProfiMail

    ProfiMail is a powerful email client for mobile phones. It allows you to read your mail on the go, and send text with attachments...

    Freemium Windows Mobile Android S60 Android Tablet

  • TrulyMail icon

    TrulyMail

    TrulyMail is an email client and a private messaging system, very feature rich (voice recording, script blocking, etc.). Features:...

    Free Windows

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