SMTP & API

Mailpro webhooks: what are the three types of webhooks?

At Mailpro the word “webhook” covers three different mechanisms. They serve different needs and are configured in different places —...

Which events can Mailpro send me by webhook?

An event webhook (direction A) can subscribe to one or more of the following events (50 per webhook at most)....

How do I create, test and delete an event webhook?

From the application Open Settings → Webhooks and click Create a webhook. Enter the notification URL: an https:// address reachable from the...

How do I verify that a webhook really comes from Mailpro (HMAC signature)?

Every call sent by Mailpro carries headers that let you authenticate it: X-Mailpro-Signature : t=1758000000,v1=5a72…c8b1 X-Mailpro-Event-Id : evt_5f2c… X-Mailpro-Event-Type: email.delivered X-Mailpro-Attempt ...

What happens if my server does not answer a webhook?

A delivery counts as successful when your URL answers with an HTTP 2xx code within 10 seconds. Anything else (timeout,...

How do I know the delivery status of a transactional email sent through the API?

Since September 2026, every email sent individually through the API (transactional) can be followed up to its handover to the...

Webhook or status query: which one should I use?

To know whether a transactional email was delivered, Mailpro offers two complementary means. Webhook email.delivered / email.bouncedGET /Send/{id}/Status PrincipleMailpro calls you as...

How do I send a webhook from an automation (“Send a webhook” action)?

The “Send a webhook” action lets a workflow call an external tool at a given step (direction B). It costs...

How do I trigger an automation from an external tool (incoming webhook)?

The “Incoming webhook” trigger starts a Mailpro automation from outside (direction C): a confirmed payment, a form filled in another...

How do I connect Mailpro to Zapier, Make or n8n?

Zapier, Make (formerly Integromat) and n8n can all call an API and receive webhooks. With Mailpro this opens three combinations. 1....

What are the limits of the Mailpro API (requests, attachments, API credits)?

Call rate The API accepts 500 requests per minute per account. Beyond that it answers 429 Too Many Requests with the...

Where can I find the Mailpro API documentation (developer portal)?

All technical documentation lives on the Mailpro developer portal, available in English, French, German, Spanish, Italian and Portuguese. Each API...

How do I set up a webhook in Mailpro?

To set up a webhook, register an endpoint URL on your server that Mailpro can call whenever an email event...

How do I integrate Mailpro with WordPress?

To integrate Mailpro with WordPress, route your site’s outgoing email through Mailpro’s SMTP server — either with the Mailpro WordPress...

Is Port 587 Always Encrypted?

Short answer: Port 587 is not encrypted by default — but it is the standard port for encrypted SMTP submission...

How to Check Your SMTP Connection

If your emails aren't going out, the first thing to test is the SMTP connection itself. A 30-second check tells...

What is My SMTP Username and Password?

Your SMTP username and password are the credentials your email client or app uses to authenticate with the SMTP server...

Where Do I Find My SMTP Server in Mailpro?

Your Mailpro SMTP server details are everything you need to send transactional or marketing email from your app, CRM, CMS...

What Is DNS Error 5.7.26 and How to Fix It?

DNS error 5.7.26 is the bounce code Gmail returns when an incoming message fails its sender authentication checks. The address...

How to Fix Error 5.1.1 (User Unknown)

Code 5.1.1 « User unknown » (sometimes returned with 550 5.1.1) means the receiving server cannot find the user part of the...