Plaintext stops here
Messages must use OpenPGP-compatible encryption, including GPG, before they can reach your private inbox. Unencrypted mail is declined at the gateway.
Encrypted email gateway
Private email should never arrive in plaintext.
Onion Email puts a strict privacy layer in front of your inbox. It accepts OpenPGP/GPG-encrypted mail, declines plaintext, and keeps your real destination address out of public view.
OpenPGP/GPG required · Core ID optional · trusted-service exceptions supported
Gateway policyActive
@Public alias
✓Private inbox
Encrypted OpenPGP/GPGAccepted
Unencrypted messageDeclined
Core IDOptional
A quieter, safer inbox
Protection before delivery.
Privacy policy is enforced at the email gateway—not left as another setting for the recipient to remember.
Your inbox stays private
Publish an Onion Email address while keeping the destination mailbox behind it undisclosed.
Identity when useful
A sender may attach a Core ID for decentralized identity context. It is optional, and validated when present.
How it works
Four steps.
One private destination.
Onion Email is a routing layer, so you can keep using the mailbox you already trust.
Find a recipient’s public key01
Address
Share your alias
Use your @onion.email address publicly instead of exposing your everyday mailbox.
02
Encrypt
Sender uses your public key
The message is protected with OpenPGP/GPG before it leaves the sender’s device.
03
Verify
The gateway checks policy
Encrypted messages continue. Plaintext is rejected. Approved service senders may bypass the encryption rule.
04
Deliver
Only accepted mail is forwarded
Your private destination receives the original accepted message through authenticated email routing.
Clear rules, no mystery
Built to reject, not quietly collect.
Messages that do not meet the recipient’s policy are declined during processing. Approved transactional senders can be allowlisted for account verification and service notices.
Core ID adds identity context when supplied, but it is not required to send encrypted mail.
Read the rejection codesStart a private conversation
Send us an encrypted email.
Use our public key and see the Onion Email gateway in action.