Claim a real email address
on your own domain.
Rebound is a self-service email relay: sign up, claim an address on a verified domain, and start sending and receiving real mail — signed, encrypted, and yours.
Live in three steps
No mailbox provider, no config. Create an account and you're sending mail.
Create an account
Sign up with an email and password. That's it — no billing to start.
Claim an address
Pick a name on a verified domain, check it's free, and claim it. It's yours instantly.
Send & receive
Mail to your address lands in your inbox; send from it to anyone. Real SMTP, signed and delivered.
Built like real email infrastructure
Not a toy — the same primitives the big providers use, self-hostable and yours.
Real SMTP, in & out
Native inbound SMTP listener with STARTTLS and MailKit outbound — direct-to-MX or via your provider.
DKIM · SPF · DMARC
Every message is DKIM-signed at the edge; inbound mail is verified natively so spoofing is caught.
Encrypted at rest
Message bodies are sealed with per-message AES-256-GCM envelope encryption — dashboards never see content.
Inbox, outbox, JMAP
A real inbox and outbox in the portal, plus a JMAP API (RFC 8620/8621) for modern mail clients.
Self-service & fair
Claim, hold, and release addresses. Inactive addresses are reclaimed after 90 days so names stay available.
Operator console
An admin dashboard with analytics, delivery tracking, quarantine verdicts, and a live go-live readiness check.
Ready for your first address?
Claim a name on reboundrelay.com and send your first message in under a minute.
Get your address →