What you can do
Create disposable inboxes
Spin up unlimited temporary mailboxes in one click. Each gets a unique address like
calm.brook-42@agent.agentpost.email and starts accepting email immediately.Receive email in real time
Messages appear the moment they arrive — no polling, no refresh. View HTML emails, plain text, and attachments in a sandboxed viewer.
Use your own domain
Add a verified custom domain to send and receive email from addresses you control. Full DKIM, SPF, and DMARC support via Resend.
Automate with the MCP API
Connect AI agents directly to AgentPost over the Model Context Protocol. Agents can create mailboxes, wait for email, read messages, and send replies programmatically.
Who it’s for
Privacy-conscious users — Sign up for services, newsletters, or trials without exposing your real address. Delete the mailbox when you’re done. Developers and QA teams — Test transactional email flows (welcome emails, password resets, verification codes) against a real SMTP inbox in staging or CI. AI agent builders — Give agents a working email address as part of automated workflows: sign up for a service, receive a verification email, extract the code, and continue — all without human intervention.Key capabilities
| Capability | Details |
|---|---|
| Mailboxes | Unlimited per account, deleted on demand |
| Email reception | Real-time delivery via catch-all SMTP |
| Message viewing | HTML rendering, plain text fallback, attachment preview |
| Custom domains | Verified domains for sending and receiving |
| MCP API | 14 tools covering mailboxes, messages, threads, domains, and sending |
| Authentication | Persistent sessions + Bearer token API access |
Next steps
Quick Start
Create your first mailbox and receive an email in under two minutes.
Authentication
Generate an API token for programmatic and agent access.