Unofficial, free and open-source Google Inbox Desktop App. Built using electron, Inboxer includes a menu bar which is globalmenu compatible and works, and keyboard shortcuts.

Polymail is described as 'The most powerful platform for email productivity in a beautiful native app — on desktop and mobile' and is a Email Client in the office & productivity category. There are more than 50 alternatives to Polymail for a variety of platforms, including Windows, Mac, Linux, Android and iPhone apps. The best Polymail alternative is Thunderbird, which is both free and Open Source. Other great apps like Polymail are Evolution, Microsoft Outlook, eM Client and Spark Mail.
Unofficial, free and open-source Google Inbox Desktop App. Built using electron, Inboxer includes a menu bar which is globalmenu compatible and works, and keyboard shortcuts.

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.

Nylas Mail Lives is the most popular Self-Hosted alternative to Polymail.
GyazMail is a email client software for Mac OS X, based on Cocoa framework, simple, easy-to-use with many features.

Atmail webmail system offers a webmail client, email server platform and mailserver appliance for Linux, Unix and Windows.






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.




The ultimate email service for personal, professional and business use.
Unique Email Addresses MeMail gives you the ability to get the email address that best represents you! 1000s of email addresses for fun, personal or business use.
Ad-Free & Secure Work Space The MeMail.





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.




NeoMail is a web-based mail client that allows users to access their mail spools and send messages. It does not require a POP3 server, or any shell access for the users. It interfaces directly with user mail spools.

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



