Self-hosted Encrypted Inbox

One-click anonymous, E2E encrypted temporary inbox for signups and sensitive email

Problem

A Show HN introduced SecretGate, a self-hosted anonymous inbox with browser-side E2E encryption. Many developers and privacy-conscious users need temporary email addresses to sign up for services and receive verification codes, but don't trust third-party free inboxes (which may scan or sell data) and don't want to set up a mail server from scratch.

Solution

An out-of-the-box self-hosted inbox app with Docker one-click deployment, built-in key management, and browser-side decryption. Users can create temporary addresses via web or API with auto-expiry.

Users

Privacy-focused developers, self-hosting enthusiasts, regular users needing temporary email.

MVP

Docker image; SMTP receiving; browser-side PGP or symmetric encryption; temporary address generation and expiry; simple web UI.

Revenue

Open-source core + hosted subscription (no server maintenance), or enterprise version with custom domains and team management.

Why now

Rising privacy awareness and self-hosting trend, but mail server setup is complex and needs simplification.