Give an AI agent its own inbox

Hand the agent an address on your Tillpad domain, let mail arrive, and have the agent read it with the same API key. The address cannot send. For developers giving an agent a receive-only inbox. Pro is $9 a month.

A mailbox that only receives

People and other systems send mail to localPart@your inbound domain. The agent lists messages, reads one, and downloads an attachment or the raw MIME. A temporary address expires. A permanent one stays until you delete it.

Use a temporary inbox for a job that should stop accepting mail, and a permanent one for an agent that should keep the same address. Deleting an inbox purges stored messages. The email API page lists the size and rate limits for this deployment.

Tell your system that mail arrived

Register a webhook if your own server should wake up. Tillpad POSTs metadata for email.received and signs it with HMAC. Your server then calls the message API if it needs the body. Block a sender address or a domain when a mailbox starts collecting mail you do not want. The block applies to every inbox on the account.

Each accepted message counts as one inbound_email toward the spending cap. Listing messages does not. Reading raw MIME or an attachment counts as one key-value operation each.

curl -s -X POST "https://tillpad.dev/api/inboxes" \
  -H "Authorization: Bearer tp_…" \
  -H "Content-Type: application/json" \
  -d '{"localPart":"agent-jobs","kind":"temporary","ttlSeconds":86400}'

curl -s -X POST "https://tillpad.dev/api/inboxes/webhooks" \
  -H "Authorization: Bearer tp_…" \
  -H "Content-Type: application/json" \
  -d '{"url":"https://example.com/hooks/tillpad"}'

Questions people ask

Can the agent reply from this address?

No. The inbox receives and stores mail. Nothing in the API or the MCP tools sends a message out.

Which MCP tools read the mailbox?

manage_inbox creates and lists inboxes. read_inbox_message lists and reads messages. manage_inbox_webhook registers the metadata callback. manage_inbox_blocklist blocks senders.