Show HN: TabMail. Open-source AI email for Thunderbird and iPhone

Solo developer TabMail released open-source AI email clients for Thunderbird and iPhone under the MPL 2.0 license, with code hosted on GitHub at TabMail/tabmail-thunderbird and TabMail/tabmail-ios. The AI backend remains closed because it requires compute from LLM providers, though email and calendar processing uses zero data retention and search stays on-device. The Thunderbird add-on relies on the Experiments API for features unsupported in MV3 and is hosted on the developer's website.

Hi all, I'm the sole developer of TabMail. I wanted my email client to have AI features, and ended up making a Thunderbird add-on and an iPhone app. I've now open-sourced both under MPL 2.0, and I wanted to share them here to get some community feedback, if possible. I made a short video of both, since it's easier to show what they do than explain everything in a post. Hopefully you like it: https://tabmail.ai/demos/tabmail-promo.mp4 https://tabmail.ai/demos/tabmail-promo.mp4 You can review a prepared reply, tell it what to change, or ask questions about your inbox and calendar. On TB, I wanted to do most of this with the keyboard. On the phone, I wanted to just talk to it : Code: Thunderbird: https://github.com/TabMail/tabmail-thunderbird https://github.com/TabMail/tabmail-thunderbird iOS: https://github.com/TabMail/tabmail-ios https://github.com/TabMail/tabmail-ios Note: I have the AI backend closed for now, since it does need me to fish compute from LLM providers, etc. Still, I made the email/calendar processing ZDR zero data retention since, as a solo dev, I didn't want to go through the headache of storing anyone's email or calendar data. The content can be sent for AI processing, but isn't kept on TabMail's servers. Search stays on-device. Anyhow, please try it out Just trying to share how I wanted email to be with AI features : Happy to answer questions. Downloads: https://tabmail.ai https://tabmail.ai PS. The Thunderbird add-on uses the Experiments API for things that aren't supported in MV3, so I'm hosting it on my website for now. Comments URL: https://news.ycombinator.com/item?id=49730649 https://news.ycombinator.com/item?id=49730649 Points: 1 Comments: 0