Fold

Encrypted webmail

Gmail and Outlook, on your metal, under your keys.

Fold is a PWA mail client. You sign in here, connect Google or Microsoft, and we cache mail encrypted in Postgres. Attachments go to S3 as ciphertext.

Envelope crypto
A per-user data key wraps tokens, subjects, and bodies. The master key never sits next to the ciphertext.
Your cloud
DigitalOcean App Platform, remote Postgres, AWS S3. Ready for a real domain and OAuth callbacks.
PWA push
Provider webhooks wake the worker. Web Push reaches the installed app when mail arrives.