Thunderbird
Free · Email · Cross-platform
Thunderbird is a feature-rich email client developed by Mozilla. It supports multiple email accounts, calendars, tasks, and RSS feeds. Thunderbird offers advanced search, message filtering, and phishing protection.
Multiple account support
Calendar and tasks
RSS feed reader
Message filters and search
OpenPGP encryption
Extensions and themes
System Requirements
- Windows 7/8/10/11
- macOS 10.12+
- Linux (any)
- 1 GB RAM
- 200 MB disk