Freedom from Chaos
Waste less time finding browser tabs.
Access all your messages, calendars, and contacts in one fast app. Filter and organize the way you like. Manage all accounts separately or in a unified inbox. Thunderbird simply makes your life simpler.
Freedom from Manipulation
Our agenda isn’t hidden. It’s to make the world better.
Thunderbird is funded by user donations. We don’t collect personal data, sell ads in your inbox, or secretly train AI with your private conversations. Thunderbird is open source. As part of the Mozilla family you can be confident we always put your privacy and security first.
Freedom to Geek Out
Thunderbird is yours.
Thunderbird is clean and elegant by default, but easily customizable to match your workflow and visual preferences. It is loaded with unique and powerful features. Here are just a few that people love:
Its unified inbox enables me to stay sane even in the busiest of times. I am never switching e-mail clients again!
I love the tag feature. I tag something important and find it quickly.
It is the first program I install on any PC I use / own... I use it on Windows / Mac and Linux.
Having an open source alternative [for] receiving and managing email... is great for privacy.
[Thunderbird] empowers me to maintain ownership of my emails.
You'd be hard pressed to find a client more extensible than Thunderbird!
Freedom to Go Anywhere
Introducing Thunderbird Mobile
The freedom and joy of Thunderbird are now available to you anywhere you go. With Thunderbird Mobile your most important messages are sent and received by an open-source, secure app that respects your privacy
