Local by default
Your mail, drafts, and search index stay on your device. Provider credentials belong in the operating system’s secure credential store.
Email, reconsidered
Your attention, back in your hands.
LetterFinch is a local-first email client designed for humans and agents—built to make writing feel natural and important work easier to see.
Native desktop application in private development
LetterFinch principles
Write naturally
Compose in rich text or Markdown without losing structure. The recipient receives clean, readable email—not a designed newsletter.
Agents with boundaries
Automation should be visible, scoped, auditable, and reversible. LetterFinch is designed to help agents work with you, not quietly act as you.
Why LetterFinch
Email should help you decide what matters—not make everything feel urgent.
Most inboxes were designed around arrival time. LetterFinch is being built around attention, intent, and trust: flexible Spaces for the accounts and responsibilities you choose, a focused view for work that truly needs you, and a composer that treats writing as a first-class experience.
The goal is simple: make email useful, calm, and genuinely pleasant again.
Built in the open. Tested carefully.
LetterFinch is not yet publicly available. The current development build is being tested with real accounts through provider-authorized access and a local-first storage model.