The Best 65 Postbox Alternatives

  • Unibox icon

    Unibox

    Unibox is a people centric email client that organizes your messages by person. It avoids having email like a to-do list. Features: - Unibox supports IMAP servers:...

    Commercial Mac OS X

  • nPOPuk icon

    nPOPuk

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

    Free Open Source Windows Windows Mobile

    Portable POP3 Support
  • IncrediMail icon

    IncrediMail

    Ad-supported email client for the Microsoft Windows operating system by IncrediMail Ltd. that offers the ability to add e-mail backgrounds, Emoticons, Ecards, Sounds...

    Free Personal Windows

  • Forte Agent icon

    Forte Agent

    Agent is a powerful newsreader and email program for managing your communications: * Multiple News Servers · Agent makes it easy to automate access to all your...

    Commercial Windows

  • Simple Mail icon

    Simple Mail

    Simple Mail is a mail client for Firefox. It allows you to get notified, read and write messages for multiple email accounts inside Firefox. Usage: Configure one or...

    Free Mac OS X Windows Linux Firefox

  • 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 AOL. EmailTray intelligently ranks...

    Free Windows Android

    Support for IMAP POP3 Support
  • GyazMail icon

    GyazMail

    GyazMail is a email client software for Mac OS X, based on Cocoa framework, simple, easy-to-use with many features.

    Commercial Mac OS X

  • Columba icon

    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...

    Free Open Source Mac OS X Windows Linux BSD

  • 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 use it with Gmail and Hotmail POP3...

    Free Windows Linux

  • Mynigma icon

    Mynigma

    Mynigma is a new kind of email client with built-in encryption.

    Free Personal Mac OS X iPhone iPad

  • TrulyMail icon

    TrulyMail

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

    Free Windows

  • Kube icon

    Kube

    Kube is a modern communication and collaboration client built with QtQuick on top of a high performance, low resource usage core. It provides online and offline access...

    Free Open Source Linux

  • eMail Widget icon

    eMail Widget

    Now Manage Your Emails DIRECTLY in Notification Center. Archive or Star an email, Mark an email as Read, Report Spam and Delete emails all with a single tap.

    Commercial iPhone iPad