n8n runs your workflows on its own, triggered by a form, an order or a schedule. With the MCP Client Tool node, the AI agent in your workflow uses Mailpro's tools directly: contacts, templates, campaigns, SMS.
n8n is developed by n8n GmbH, founded in 2019 in Berlin. You can use it online or install it on your own servers; its “fair-code” license allows self-hosting.
In an n8n workflow, an AI Agent node is given tools. The MCP Client Tool sub-node gives it all the tools of an MCP server at once: connected to Mailpro, the agent can look up a contact, create a list, send an email or an SMS.
The difference from a chat assistant: here, nobody is watching. This is exactly the case for which Mailpro offers direct sending with a daily cap, a log and one-click shutdown.
| Developer | n8n GmbH, Berlin (Germany) |
|---|---|
| Node | MCP Client Tool, sub-node of an AI Agent |
| Transport | HTTP Streamable |
| Sign-in | MCP OAuth2, automatic registration on by default |
| Hosting | Online or on your servers |
A form triggers the workflow: the agent adds the contact to the right list and sends the welcome email.
An appointment booked online: confirmation SMS right away, reminder the day before.
Your store reports an abandoned cart: the agent writes a personalized follow-up and sends it.
Every Monday, the agent reads the week's statistics and sends them to the team.
In your workflow, add an AI Agent node and, in its tools, the MCP Client Tool sub-node.
Transport: HTTP Streamable; address: the server address shown in your Mailpro account, on the AI Assistants (MCP) page.
Authentication: MCP OAuth2. Leave automatic registration on, save, then sign in to Mailpro and accept the permissions.
In Mailpro, set how this agent sends: an agent that runs on its own needs a daily cap.
MCP OAuth2 authentication has been available in n8n since late 2025: update n8n if the option does not appear.
Run the workflow with approval for a few days: you see in Mailpro what the agent wants to send before letting it act alone.
One confirmation per customer per day is not a thousand: set the cap to the normal volume, and it will stop a loop.
Even if n8n runs on your own servers, it calls Mailpro over the Internet: make sure your n8n server can make outbound HTTPS connections.
On the Mailpro side, the rules are the same for every assistant: by default, each send waits for your approval, or goes out directly within a daily cap; a log keeps track of everything, and one click suspends all sends. The details.
The MCP Client Tool sub-node, attached to an AI Agent node, with the HTTP Streamable transport and MCP OAuth2 authentication.
No: n8n registers itself with Mailpro automatically, you just need to sign in.
Yes, to one number with direct sending, within the cap; an SMS campaign always waits for your approval.
All questions: AI assistants FAQ.
Create a free Mailpro account, connect your assistant from the AI Assistants page of your account, and stay in control of every send.
