Thunderbird is a free and open-source email client developed by Mozilla, offering features such as email management, calendar integration, and security enhancements.

Features of Thunderbird:

• Customizable email filtering and management.
• Support for multiple email accounts and protocols (IMAP, POP3, SMTP).
• Integrated calendar and task manager with add-on support.
• Strong security features, including encryption and phishing protection.
• Expandable with themes and extensions for additional functionality.

To check version , use:

thunderbird --version

Disclaimer: Thunderbird is an open-source email client developed by Mozilla and distributed under the Mozilla Public License. It is not affiliated with, endorsed by, or sponsored by any company. Thunderbird is provided "as is," without any warranty, express or implied. Users utilize this tool at their own risk.