An MCP server is a service that lets an artificial intelligence assistant use an application: read its data and take actions in it, in plain language. MCP stands for Model Context Protocol, an open standard introduced by Anthropic at the end of 2024 and since adopted by most AI assistants and tools.
How an MCP server works
- The application (an email marketing platform, a CRM, a calendar…) publishes an MCP server that describes its tools: "list contacts", "send an email", "read a campaign's statistics".
- The assistant, called an MCP client, connects to the server, usually with an OAuth authorization given by the user. It can be a major assistant (Claude, ChatGPT, Le Chat…), an automation tool such as n8n, or a self-hosted AI: an open model such as Llama, Mistral, Qwen, DeepSeek or Gemma, installed inside the company. These models have no tools of their own; they act through MCP servers.
- When you ask "how many contacts opened my last newsletter?", the assistant picks the tool, calls it and answers with the real data.
- An MCP server usually relies on the application's API; the difference is that it is designed to be used by an AI, not by a developer.
Why it matters for email marketing
- Preparing a campaign, finding a contact, comparing statistics or sending an SMS becomes a simple request to your assistant.
- Sends can be fully automatic: an agent that follows up with a customer, confirms an order or alerts by SMS, with no one involved.
- To automate with peace of mind, a good MCP server provides safeguards: human approval when you want it, daily limits, and the ability to cut access at any time. Start with approval, switch to automatic once you trust it.
The Mailpro MCP server
- Your assistant reads your account (credits, lists, contacts, templates, statistics) and prepares your emails, campaigns and SMS.
- With approval or automatic, your choice, assistant by assistant: by default you approve each send in Mailpro or from the link in an email; when you are ready, sending becomes direct, with a daily cap, a log of what the assistant did, and suspension of all sends in one click.
- Sends go out from your account: your sender domain, your lists, your unsubscribes and your statistics. That is what an assistant, even the most powerful one, does not have on its own.
- Connection with your Mailpro account, no key to copy.
Mailpro and AI assistants: connect your assistant or your AI to Mailpro, automatic or approved sends, your choice. Start for free