Evolution is a personal information management application that provides integrated mail, calendaring, address book and task list functionality.




The best Contact Manager alternative to Thunderbird is Evolution, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to Thunderbird and four of them are Contact Managers so hopefully you can find a suitable replacement. Other interesting Contact Manager alternatives to Thunderbird are Koma-Mail, sup and Clyton.
Evolution is a personal information management application that provides integrated mail, calendaring, address book and task list functionality.




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.




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.

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.




I use both Thunderbird and Evolution, sometimes Claws-Mail. Evolution is the only one that can show the real "received" date in scams I have been receiving for months. In a today's scam Evolution shows "sent date" (falsified) 14-12-2019 and "received date" 30-01-2023 (evidently true). Thunderbird and Claws-Mail show 14-12-2019 in both columns.