The problem to solve
Direct mailbox integrations repeat authentication, connection and error-handling work in every project.
Integration guide
Outlook mailbox API
Connect Microsoft 365, Outlook.com or Hotmail and use one HTTP API for mailbox sending and received-message access.
Outlook mailbox APIapikey + apikeyboxMicrosoft OAuth · MailBridgeAPI endpoints
A practical implementation path
MailBridgeAPI keeps the authorized mailbox connection in one dashboard and gives backend applications account and mailbox API keys for documented HTTP endpoints.
01 — 03
From mailbox to working request
Connect the mailbox
Authorize the mailbox or configure its compatible SMTP and IMAP connection in the MailBridgeAPI dashboard.
Keep keys in the backend
Store the account API key and mailbox API key in server-side environment variables or a secret manager.
Call and verify the endpoint
Run the request, inspect the JSON response and keep the request or message identifier for support.
Microsoft OAuth · MailBridgeAPI endpoints
Copy-ready example
Connect Microsoft 365, Outlook.com or Hotmail and use one HTTP API for mailbox sending and received-message access.
- One mailbox connection managed centrally
- API access without copying the mailbox password into every project
- Dashboard activity, errors and mailbox health
- A testable path from code to the real mailbox
const body = new URLSearchParams({
apikey: process.env.MAILBRIDGE_ACCOUNT_KEY,
apikeybox: process.env.MAILBRIDGE_MAILBOX_KEY,
recipient_email: 'customer@example.com',
mail_subject: 'Hello from Outlook',
mail_body: '<p>Sent through the connected Microsoft mailbox.</p>',
format: 'html',
from_source: 'nodejs'
});
const response = await fetch('https://api.mailbridgeapi.com/sendemail/', {method:'POST', body});
console.log(await response.json());Provider and implementation limits
OAuth access depends on provider consent, scopes, token validity and provider policy. MailBridgeAPI does not bypass Gmail or Microsoft limits.
LIVE SMTP · IMAP · OAUTH DEMO
Test the real connection before you build
The live demo can validate SMTP, IMAP or a supported OAuth provider and issue temporary API keys without creating an account.