Room to write
A distraction-free editor, formatted messages, signatures and recipient autocomplete.
A CLOSER LOOK AT KEYKEEPER
Write without distraction. Bring your domain. Give your agent an inbox. Thoughtful email, down to the small details.
Free to start. No ads. No advertising trackers.

Conversations in view. Everything else within reach.
Fictional messages. Real product.01 / YOUR CONVERSATIONS COME FIRST
Mail infrastructure we operate. An inbox without advertising trackers. And OpenPGP when you want to protect a message body with your recipient’s key.
Encrypt the message body in your browser, using saved and verified recipient keys.
Supported message bodies. Subjects and addresses remain visible. Standard mail and drafts are accessible to the service. Encrypted attachments and built-in decryption are not available yet; use an external OpenPGP client to read encrypted mail.
02 / THE DETAILS YOU USE EVERY DAY
Less interface in the way.
More care in how it works.
A distraction-free editor, formatted messages, signatures and recipient autocomplete.
A 20-second Undo Send window. Send Later with a date, time zone and a place to manage what’s waiting.
Saved drafts keep the message, sender and attachment files together when you come back.
Threaded messages, inline replies, Reply all and forwarding with the original attachments.
Search across stored mail folders, star the important things and keep filters out of the way.
Bulk mail actions with move Undo, automatic inbox refresh and navigation that fits your phone.
03 / YOUR NAME ON THE DOOR
Your personal address, a shared contact alias, or an agent with its own mailbox. Keep your DNS provider and website, and bring your mail to KeyKeeper.
Personal includes one domain and 10 aliases for $1/month. Separate mailboxes have their own plans and limits.
Bring your own domain04 / AN ADDRESS OF THEIR OWN
A real mailbox over REST or MCP. Register, receive and read for free. Add prepaid credits when it’s time to send.
A person or application writes to your agent’s own address.
[email protected]A signed webhook notifies your service. Read the message through the API.
message.receivedUse your own agent logic, with optional human approval in the example workflow.
REST · MCP05 / MAIL YOU CAN BUILD ON
Connect mail to your application using REST or MCP. Send attachments, track submission and recipient delivery separately, and subscribe to signed events.
/api/v1/agent/send/api/v1/agent/inbox/mcpSafe retriesKeep the same send key.
Delivery visibilityFollow the actual outcome.
Pay as you goTop up from $1.
Authenticator apps and one-use backup codes.
Verify an external address to help you get back in.
Prepare and test a replacement before revoking the old key.
Off-host backups with a tested restore procedure.
ONE SERVICE. YOUR WAY IN.
Free to start. Personal from $1/month. See plans and limits →
What’s next: deeper agent integrations and practical PGP.