Interleaf

Sealed mail between Obsidian vaults.

Your notes already live on your devices — your mail should too. Interleaf turns any vault into a mail endpoint: every message sealed to the recipient's key before it leaves, every signature checked against a pinned identity. Only the two vaults ever hold the key.

Verification is native. Every message carries a signature checked against a pinned key. Key changes are loud, not silent.

No accounts, no directory. First contact happens out-of-band through invite codes — the invite is the address. Strangers knock into a quarantine you review.

Relays can't read. The relay is a dumb per-fingerprint mailbox of opaque boxes. It sees routing metadata and ciphertext. That's all.

A message, end to end: sender vault → sealed box → opaque relay → sealed box → recipient vault. The relay sees routing metadata and ciphertext, never the message.

In development — ships as an Obsidian plugin. BUSL-1.1.