2025 was an exciting year for Thunderbird. Many improvements were shipped throughout the year, from faster updates with a new release cadence, to a modernized codebase for the desktop app. We made big strides on our mobile apps and introduced the upcoming Thunderbird Pro to the world. As we wrap up the year, a huge […]

As we get ready for the Thunderbird Pro launch, we want every service we offer to be secure and worthy of the trust our community places in us. That means being honest about where we stand today and the work we are doing to meet the promises we are making. Recently we partnered with OSTIF, […]

Welcome back to the latest update on our progress with Thunderbird Pro, a set of additional subscription services designed to enhance the email client you know, while providing a powerful open-source alternative to many of the big tech offerings available today. These services include Appointment, an easy to use scheduling tool; Send, which offers end-to-end […]

If your organization uses Microsoft Exchange-based email, you’ll be happy to hear that Thunderbird’s latest monthly Release version 145, now officially supports native access via the Exchange Web Services (EWS) protocol. With EWS now built directly into Thunderbird, a third-party add-on is no longer required for email functionality. Calendar and address book support for Exchange […]

In April of this year we announced Thunderbird Pro, additional subscription services from Thunderbird meant to help you get more done with the app you already use and love. These services include a first ever email service from Thunderbird, called Thundermail. They also include Appointment, for scheduling meetings and appointments and Send, an end-to-end encrypted […]

Today we’re pleased to announce what many in our open source contributor community already know. The Thunderbird team is working on an email service called “Thundermail” as well as file sharing, calendar scheduling and other helpful cloud-based services that as a bundle we have been calling “Thunderbird Pro.” First, a point of clarification: Thunderbird, the […]

We’ve just released Thunderbird version 128, codenamed “Nebula”, our yearly stable release. So with that big milestone done, I wanted to take a moment and tell our community about the state of Thunderbird. In the past I’ve done a recap focused solely on the project’s financials, which is interesting – but doesn’t capture all of […]

We’re excited to share a new project we’ve been working on at Thunderbird called Appointment. Appointment makes it simple to schedule meetings with anyone, from friends and family to colleagues and strangers. Escape the endless email threads trying to find a suitable meeting time across multiple time zones and organizations. With Appointment, you can easily […]

In space, a supernova creates the building blocks of creation. In a nebula, those elements nurture new possibilities. Thunderbird 128 Nebula brings together and builds on the best of Supernova! Find out what’s new in our initial 2024 release.

The road to Thunderbird 115 “Supernova” has been a long one, and we’re confident you’ll love the final result. If you’re already using Thunderbird 115, you may have noticed a feature that is conspicuously absent: Thunderbird Sync.

With this year’s version, we’re delivering much more than just another yearly release. Supernova represents a modernized overhaul of the software – both visually and technically – while retaining the familiarity and flexibility you expect from Thunderbird.

We asked Jon Hicks, the creator of the original Firefox and Thunderbird logos, to re-imagine his iconic design in light of Thunderbird’s exciting future. 

Last year, our mighty donor base contributed a record-breaking amount in donations to the Thunderbird project. This was a bright, assertive sign that you want to see Thunderbird thriving. Not just in 2023, but decades into the future! 

Thunderbird 115 “Supernova” will be intuitive and welcoming to new users, while remaining familiar and comfortable for veteran users. See how we’re accomplishing that balance with a preview of the new Folder Pane.

“Why does Thunderbird look so old, and why does it take so long to change?” Let’s answer that burning question with some important history, and a look into the future.