📅 Thunderbird's calendar is getting a redesign! Jesse from the design team walks through the journey so far, including modernizing the grid, navigation, and calendar sidebar. Read the full post: blog.thunderbird.net/2026/08/deskt… #thunderbird #calendar #design #opensource

One of our design team created a cheerful gif perfect for our sunny new Extended Support Release! Alt text: A stylized circular logo, that begins as a line drawing but ends in three green hills beneath a light blue sky, and then becomes part of a button with the logo next to the word 'Meadow.'

In case you missed it: Thundermail, our new email service, has started sending invites to Early Birds on the waitlist. Early subscribers get a real say in where our #opensource #email service goes next, and we want you along for the ride! Join the waitlist here: www.tb.pro/waitlist

Our new episode of Office Hours is out! We're chatting with Thunderbird contributor Bogomil about how he got involved with the project, mentorship in the open source community and more. Check out the link to watch to the full episode! youtu.be/xSXJsPIVV60?... #Thunderbird #OpenSource

Everything's coming up roses in Pasadena for @socallinuxexpo.bsky.social! Come visit us in the Expo Hall at booth 221 to chat with our team, learn what we're up to, and grab some stickers from: 14:00-18:00 Today 10:00-18:00 Saturday 10:00-14:00 Sunday #Thunderbird #SCaLE23x

Want to know more about where @mozilla.org is headed? The 2025/26 State of Mozilla is live, sharing our product strategy, vision for the future and a look at some of Thunderbird’s favorite “rebel” developers, builders and engineers. Read here: stateof.mozilla.org

We’ll be at the @austinjavascript.com Meetup tonight! 🎉 Come say hi, chat about open source, and connect with the community! #Thunderbird #JavaScript #Austin www.meetup.com/austin-js/ev...

We're ready for Day 2 of @socallinuxexpo.bsky.social ! Come find us in the Exhibit Hall and chat with the team, try some demos, and of course, grab some stickers! #Thunderbird #SCaLE #SCaLE22x

All the speed, power, and customization of Thunderbird in a short and sweet video perfect for viewing (and sharing) on your phone. Help us spread the word to bring Thunderbird everywhere! Thanks again to @freehive.com for their amazing work. #Thunderbird #OpenSource #Email

If you didn't find us at @fosdem.bsky.social today, there's still tomorrow! Building K, Floor 1 - play with Thunderbird for Android, meet the team, find out how to get involved, and get stickers! #fosdem