@mailrail.api
Demo · simulated data

Every inbox your customers use. One API.

Read, send and listen to email across Gmail and Microsoft 365 without maintaining two integrations.

Open demo console Read the API spec

This is a product demonstration. No mailboxes are connected and no email is sent.

curl https://api.mailrail.example/v1/messages \
  -H "Authorization: Bearer $MAILRAIL_KEY" \
  -G -d mailbox_id=mbx_1 -d limit=2

{
  "data": [
    { "id": "msg_8f2c", "provider": "gmail",
      "from": "anna@acme-demo.example",
      "subject": "Renewal quote", "received_at": "2026-11-13T09:58:11Z" },
    { "id": "msg_8f2b", "provider": "microsoft365", ... }
  ],
  "next_cursor": "c_91af"
}

Unified mailboxes

Gmail and Microsoft 365 behind one message, thread and mailbox model.

Real-time webhooks

Signed events for received, sent and mailbox health changes.

Scoped API keys

Per-application keys with least-privilege scopes and rotation.

Built for scale

Independent sync workers designed for thousands of connected accounts.