Signed webhooks

Trigger workflows from inbound email

PostMX can push signed webhook events when messages arrive so your app can react immediately without polling loops.

No credit card required ยท Start free in minutes

Push-based OTP flows

Send new-message events to your auth or testing worker the moment email arrives.

Magic link automation

Capture links, verify signatures, and continue your downstream flow immediately.

Operational alerts

Route important inbox traffic into internal tools and workflows programmatically.

Traceable integrations

Use request IDs and signed payloads to debug production delivery issues quickly.

Start building today

Move from inbox to webhook in seconds

Receive real email, verify the signature, and trigger the next step with less latency.