



Betterbird is described as 'Open-source client enhancing Thunderbird with more features and bug fixes. Offers security patches and multi-row descriptions like Outlook' and is a popular Email Client in the office & productivity category. There are more than 25 alternatives to Betterbird for a variety of platforms, including Windows, Linux, Mac, BSD and Android apps. The best Betterbird alternative is Thunderbird, which is both free and Open Source. Other great apps like Betterbird are K-9 Mail, Microsoft Outlook, Evolution and SeaMonkey.




Hamsket is a fork of Rambox that was started when Rambox moved from being totally free to a "freemium" model.





Eclipse Mail is a fork of Interlink Mail and News made for Windows XP and runs on IA-32 i686 platforms. Some advantages over upstream and roytam1's mailnews are more optimizations and better interoperability with upstream.



Transform chaotic inboxes into organized workflows. See all your email folders as kanban columns. Combine all your Gmail, Outlook and more accounts into one unified view.




mu is a tool for dealing with e-mail messages stored in the Maildir-format, on Unix-like systems. mu's main purpose is to help you to find the messages you need, quickly; in addition, it allows you to view messages, extract attachments, create new maildirs, …



Lightweight Windows taskbar app that shows unread email counts from all your Gmail and Microsoft 365 accounts, no browser or Outlook required.

