TabMail: open-source agentic voice email assistant for Thunderbird, iOS and macOS
kwangmoo_yi · x · 2026-09-30
Developer kwangmooyi built TabMail over a weekend: an open-source, agentic AI email assistant for existing inboxes (Gmail, Outlook, iCloud, IMAP), available for macOS with an iPhone and Thunderbird interface.
The core interaction is "agentic dictation": you speak your intent (e.g. "say that works, and ask if she wants to walk over together") and the tool composes a reply using on-screen context. Voice dictation strips filler words, fixes grammar, and can rewrite selected text on command ("make that sound a bit more excited"). Beyond email, it composes and edits based on screen content, contacts, calendar, notes, reminders, and even Spotlight search.
It's open source on GitHub, and you can connect your own backend or the author's ZDR (zero data retention) service.
Related event: Developer Open-Sources Voice Dictation Tool and TabMail Email Assistant(2 posts)→
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