Apps similar to The Bat include Thunderbird, which is free and open source. Other options are Microsoft Outlook, Evolution, Spark Mail and Apple Mail. You're spoiled for choice with Email Clients like The Bat: we list more than 50 alternatives for Windows, Linux, Mac, Android and iPhone.
Clyton is an email client with advanced security and spam filtering features. Although priced for the general public, Clyton possesses the reliability and security required by businesses.
United States
Koma-Mail is an email client which is comfortable and has very handy functions. It does not need an installation, so that you can run Koma-Mail from your flash drive but, of course, also on your desktop.
Germany
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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 messages, prioritizes them into 4 Inboxes and alerts you only to the most important.
Built from the ground up for speed. Flectar Mail delivers native performance, instant startup, and as little as 20 MB of RAM.
SpainEU
Mulberry is a powerful, easy to use electronic mail (email) and calendar program that allows you to send, access, and manage email and calendars. Mulberry also helps you manage other related information, such as contact information.
United States
Sup is a console-based email client for people with a lot of email. It supports tagging, very fast full-text search, automatic contact- list management, custom code insertion via a hook system, and more.
Experimental terminal mail client aiming for configurability and extensibility with sane defaults.
SolMail is a powerful e-mail client that helps you to manage all of your e-mail accounts & messages in one app!
South Korea
Nylas Mail Lives is a fork of Nylas Mail that fixes many longstanding issues, improves the client experience, and is committed to publish new releases.
Columba is an email client written in Java, featuring a user-friendly graphical interface with wizards and internalionalization support. Its a powerful mail management tool with features to enhance your productivity and communication.
GyazMail is a email client software for Mac OS X, based on Cocoa framework, simple, easy-to-use with many features.
Japan
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