Test emails like you debug code. SMTP in, API out. Inspect headers, MIME and body. No servers, no setup, no cleanup.
Bring your own domains. Add as many as you need per account.
Create as many inboxes as you need. Each with its own login.
Accounts, messages, domains, tokens. API-first design.
Every email stays in the sandbox. Nothing reaches real recipients.
Domain → Cloudflare Email Routing → your instance. Works with tunnel.
Automatic OTP detection from subject and body for CI workflows.