Best Free Open Source Email Client Software For Windows

Mozilla Thunderbird

It is a popular open source email client software that offers all essential email management features like Inbox, Search, Sort, Tasks, etc.


It is a cross platform email client software through which users can manage, send, and receive emails.  

Claws Mail

It is another cross platform and open source email client that users can configure with their email services to manage their emails.


Use it to manage the emails of multiple email accounts, along with RSS and Newsgroups.


Use it to easily compose emails, send emails, receive emails, manage emails, categorize emails in multiple categories, and manage multiple email accounts.

Tap on the below icon to know more about these software.