ChatGPT supports remote MCP servers as “apps”. Add Mailpro: ChatGPT prepares your campaigns from a simple brief, queries your lists and tracks your results, without leaving the conversation.
ChatGPT is the assistant from OpenAI, an American company founded in 2015 in San Francisco. Launched in late 2022, it is the most widespread assistant, often already open on your team's computers.
What used to be called “connectors” are now called apps. An app can be a remote MCP server: that is how Mailpro plugs in. By default, ChatGPT asks for confirmation before any action that changes something, on top of Mailpro's sending rules.
The same MCP setup also works for Codex, OpenAI's coding tool: a technical team can use Mailpro from both.
| Developer | OpenAI, San Francisco (United States) |
|---|---|
| Feature name | Apps (formerly connectors), in developer mode |
| Plans | According to OpenAI: Business, Enterprise and Edu; other plans at different times — check yours |
| Sign-in | OAuth; server over HTTPS |
| Write actions | Confirmed by the user by default |
“20% off for loyal customers, on Friday”: ChatGPT writes the copy, picks the list and prepares the campaign.
How many contacts, which tags, who unsubscribed this month: the answer comes from your account.
It suggests several subject lines or texts and saves them as separate templates.
The next day, it reads the campaign's opens and clicks and suggests what to do next.
In ChatGPT, open the Apps settings and turn on developer mode (in a business workspace, the admin must allow it).
Create an app from an MCP server and enter the server address shown in your Mailpro account, on the AI Assistants (MCP) page.
ChatGPT opens the Mailpro sign-in page: sign in and accept the permissions requested.
In Mailpro, on the AI Assistants page, set how it sends: with approval or direct, daily cap, notification.
ChatGPT's menus change often: if the label is different, look for “Apps” or “developer mode” in the settings.
ChatGPT asks for your confirmation before acting, and Mailpro waits for your approval before sending (unless you have chosen direct sending).
The ChatGPT plans that support custom MCP apps have changed several times: the reliable answer is in OpenAI's help center or with your admin.
ChatGPT uses the MCP server's tools. All 51 Mailpro functions are tools: everything is available.
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.
A plan that supports custom MCP apps in developer mode: Business, Enterprise and Edu according to OpenAI, others at different times. Check yours in the Apps settings.
It prepares it; by default, it waits for your approval in Mailpro. SMS campaigns always wait for your approval.
What ChatGPT reads to answer you goes through OpenAI, under its terms. Your lists and statistics stay stored at Mailpro, in Switzerland.
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.
