The Thunderbird Time Machine boots up Windows XP, and travels back to 2004 to pay respect to Thunderbird 1.0.

It’s the Summer of 2003. Linkin Park, 50 Cent, and Evanescence have top-selling new albums. Apple’s iPod hasn’t even sold 1 million units. Mozilla’s brand new web browser is still called Firebird. And a new cross-platform, open-source application called Thunderbird just debuted from the foundations of Mozilla Mail…

We understand that certain add-ons are invaluable to your workflow. So, to help you decide the best time to update your version of Thunderbird, here’s a simple way to discover if the extensions you currently have installed are compatible with Thunderbird 102.

Thunderbird 102 is here! On behalf of the entire Thunderbird team, I’m thrilled to announce the availability of our major yearly release. Thunderbird 102 is loaded with highly-requested features, and we think you’ll be delighted by them.

Today, we announced our detailed plans for Thunderbird on mobile. We also welcomed the open-source Android email client K-9 Mail to the Thunderbird family. Below, you’ll find an evolving list of frequently asked questions about this collaboration and our future plans.

Open-source Android email app K-9 Mail has joined forces with the Thunderbird project, signaling the beginning of a long-term vision to deliver an outstanding Thunderbird mobile experience.

The wait for this year’s major new Thunderbird release is almost over! But you can test-drive many of the new features like the brand new Address Book, Matrix Chat support, import/export wizard, and refreshed visuals right now with the Thunderbird 102 Beta. Better still, you might be directly responsible for improving the final product via your feedback and bug reports.

Treating online articles, news, and videos just like email is surprisingly intuitive. Here’s how to use the magic of RSS to bring your favorite web content to your Thunderbird inbox.

What was Thunderbird’s income in 2021? How much was spent? How much is left in the bank? Here’s a breakdown of our 2021 financials, and how it affects our team, our product, and our roadmap.

Thunderbird 102 includes major new features for our global community of users, and we’re confident you’ll love them. Here’s a sneak peek!