Real email · real accounts · real infrastructure

Real email for your domain — and your automations

Mailinbox is a real email company. We run real mailboxes on real domains: catch-all addresses that actually receive mail, a live inbox, a REST API, and MCP tools so people and AI agents can read, search, and act on real messages from one place.

Catch-all on your domain
REST + MCP for agents
You control the infrastructure

A real email company

Not a mock, demo, or throwaway form field. Mailinbox delivers real SMTP mail into real accounts on your domain — then gives you a real inbox plus infrastructure to automate it.

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Real catch-all on your domain

Any local-part can be a real mailbox. Create disposable or permanent identities that actually receive internet email, without spinning up a new account each time.

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Real human inbox

Search, open, and read real messages in a fast web UI — the same mail your services and agents receive, ready for day-to-day use.

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Automation on real mail

REST API and MCP so internal services and AI agents can list, search, and fetch real messages programmatically.

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You own the pipe

Real mail lands through professional email routing into infrastructure you control — production delivery, not a consumer toy inbox.

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Made for AI on real accounts

Agents use real addresses, wait for real messages, extract what they need, and keep notes — without asking humans for setup each time.

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Multi-domain ready

Start with your primary domain. Add more real domains later that point into the same central inbox service.

API & MCP, ready for agents

One access token unlocks REST and MCP. List mail, search messages, fetch full bodies, and manage attachments from your own systems.

  • List & filter inbox messages
  • Fetch full message content
  • MCP tools for AI agents
  • Built for internal services and automations
GET /api/emails?limit=20 Authorization: Bearer <token> # MCP tools list_emails · search_emails get_email · delete_email

Why teams pick Mailinbox

Consumer webmail is built for people clicking around. Mailinbox runs real email accounts for products, ops, and AI that need reliable inbound mail on a domain you trust.

Real maillive SMTP delivery
Real accountsany local-part
APIREST for services
MCPnative for agents

FAQ

Is Mailinbox a real email company?

Yes. We operate real inbound email: real MX delivery, real accounts on your domain, a real inbox UI, plus developer and agent interfaces (REST/MCP). This is production mail, not a simulation.

Can I use any address on my domain?

Yes. Catch-all means any local-part can be a real mailbox that receives real internet email. Pick an address, use it for your product or agents, and keep a note of what you used.

How do I get an account?

Register or log in from this site. We’ll review your request and get back to you.

Start with real email today

Create an account to get real identities on your domain and connect agents via API or MCP after approval.