Much of what was improved in this newest version was built upon the foundation we’ve been laying for the last three years. The new Thunderbird is a release that the team and community are proud of. Ability to change order of accounts in UI.CardDAV Address Book Support (and CardDAV auto-detection support).Native support for macOS devices built with Apple Silicon CPU.You really have to scroll through the release notes as there are a lot of little changes that make Thunderbird 91 feel really polished. After setting up an account, the wizard also points users at additional (optional) things to do – such as adding a signature or setting up end-to-end encryption. The new wizard not only features a better look, but does auto-discovery of calendars and address books and allows most users to set them up with just a click. One of the most noticeable changes for Thunderbird 91 is the new account setup wizard.

That’s a lot of geekspeak to say that Thunderbird 91 will feel like it got a speed boost. The new multi-process Thunderbird takes better advantage of the processor in your computer by splitting up the application into multiple smaller processes instead of running as one large one. Thunderbird has gotten faster with multi-process support.

Multi-Process Support (Faster Thunderbird) In this post we’ll focus on the most notable and visible ones. There are a ton of changes in the new Thunderbird, you can see them all in the release notes. Our team was blown away by the support we received in terms of donations and open source contributions and we extend a big thanks to everyone who helped out Thunderbird in the lead up to this release. But in the midst of a global pandemic, the important role that email plays in our lives became even more obvious. This past year had its challenges for the Thunderbird team, our community and our users. Thunderbird 91 is our biggest release in years with a ton of new features, bug fixes and polish across the app. Existing Thunderbird users will be updated to the newest version in the coming weeks. The newest stable release of Thunderbird, version 91, is available for download on our website now.

Mozilla thunderbird stable release