A CLOSER LOOK AT KEYKEEPER

Private mail.
Built to do more.

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.

Inside KeyKeeperActual interface
KeyKeeper’s dark inbox with compact conversations, stars and sidebar folders.

Conversations in view. Everything else within reach.

Fictional messages. Real product.

01 / YOUR CONVERSATIONS COME FIRST

Privacy is part
of the foundation.

Mail infrastructure we operate. An inbox without advertising trackers. And OpenPGP when you want to protect a message body with your recipient’s key.

  • Remote images load when you allow them
  • Received HTML is isolated from the app
  • Authenticator codes and recovery options
OPTIONAL OPENPGP

Your words. Their key.

Encrypt the message body in your browser, using saved and verified recipient keys.

What does OpenPGP protect?

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

A calmer place
to get things done.

Less interface in the way.
More care in how it works.

Room to write

A distraction-free editor, formatted messages, signatures and recipient autocomplete.

Send on your schedule

A 20-second Undo Send window. Send Later with a date, time zone and a place to manage what’s waiting.

Pick up where you left off

Saved drafts keep the message, sender and attachment files together when you come back.

Keep the conversation

Threaded messages, inline replies, Reply all and forwarding with the original attachments.

Find the one you need

Search across stored mail folders, star the important things and keep filters out of the way.

A little less housekeeping

Bulk mail actions with move Undo, automatic inbox refresh and navigation that fits your phone.

Meet your everyday inbox
ONE DOMAIN. DIFFERENT ROLES.
yourdomain.com
you@yourdomain.comYour personal mailbox
hello@yourdomain.comAn alias for your inbox
agent@yourdomain.comAn independent agent mailbox
Guided ownership, MX, SPF, DKIM & DMARC checks

03 / YOUR NAME ON THE DOOR

Bring the domain.
Make it yours.

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.

  • Clear DNS instructions and automatic rechecks
  • A separate signing key for your domain
  • A From menu organized by domain

Personal includes one domain and 10 aliases for $1/month. Separate mailboxes have their own plans and limits.

Bring your own domain

04 / AN ADDRESS OF THEIR OWN

Your agent has work to do.
Give it an inbox.

A real mailbox over REST or MCP. Register, receive and read for free. Add prepaid credits when it’s time to send.

01

A message arrives

A person or application writes to your agent’s own address.

[email protected]
02

Your agent picks it up

A signed webhook notifies your service. Read the message through the API.

message.received
03

It prepares a reply

Use your own agent logic, with optional human approval in the example workflow.

REST · MCP

05 / MAIL YOU CAN BUILD ON

Small API.
Useful building blocks.

Connect mail to your application using REST or MCP. Send attachments, track submission and recipient delivery separately, and subscribe to signed events.

  • Idempotency keys for safe retries
  • Delivery events and invalid-address suppression
  • Key rotation and prepaid mail credits
Explore the developer tools
ONE MAILBOX. MORE WAYS IN.
RESTMCPWEBHOOKS
POST/api/v1/agent/send
GET/api/v1/agent/inbox
POST/mcp

Safe retriesKeep the same send key.

Delivery visibilityFollow the actual outcome.

Pay as you goTop up from $1.

Open the API reference

Two-factor authentication

Authenticator apps and one-use backup codes.

Account recovery

Verify an external address to help you get back in.

Agent key rotation

Prepare and test a replacement before revoking the old key.

Encrypted backups

Off-host backups with a tested restore procedure.

ONE SERVICE. YOUR WAY IN.

Make room for
better conversations.

Free to start. Personal from $1/month. See plans and limits →

What’s next: deeper agent integrations and practical PGP.