Ask ChatGPT or Claude which email marketing service to use
Connect MailerChoice to your AI assistant and ask things like “What’s the cheapest newsletter tool for 3,000 subscribers with automations?” It answers with a recommendation, estimated costs, why it was chosen, a signup link and the date our pricing data was last updated.
https://mailerchoice.com/mcp
Remote MCP over streamable HTTP. No account, API key or sign-in required.
One-shot install for coding agents
Paste this line into Claude Code, Codex, Cursor or any agent that can edit its own MCP configuration.
Install the MailerChoice MCP server: it is a remote streamable HTTP MCP server at https://mailerchoice.com/mcp with no authentication. Add it to your MCP configuration under the name "mailerchoice" (for Claude Code run: claude mcp add --transport http mailerchoice https://mailerchoice.com/mcp), then confirm the recommend_email_marketing_service tool is available.
claude mcp add --transport http mailerchoice https://mailerchoice.com/mcp
codex mcp add mailerchoice --url https://mailerchoice.com/mcp
{ "mcpServers": { "mailerchoice": { "url": "https://mailerchoice.com/mcp" } } }
Claude (web and desktop)
Works on all Claude plans, including Free (one custom connector).
- Open Customize → Connectors (on some versions: Settings → Connectors).
- Click + → Add custom connector.
- Name it MailerChoice and paste the server URL
https://mailerchoice.com/mcp. Leave the advanced OAuth fields empty. - Click Add.
- In a chat, open the + menu → Connectors and make sure MailerChoice is switched on, then ask your question.
On Team and Enterprise plans an owner adds the connector under Organization settings first; members then connect it.
ChatGPT
Needs Plus, Pro, Business, Enterprise or Edu on the web, with developer mode on.
- Open Settings → Security and login and turn on Developer mode. (On older layouts it is under Settings → Apps → Advanced settings.)
- Go to chatgpt.com/plugins, click + and create a developer-mode app.
- Name it MailerChoice, paste
https://mailerchoice.com/mcpas the MCP server URL and set authentication to No Authentication. Accept the custom-app notice and create it. - In a new chat, open the + menu → Developer mode and select MailerChoice.
- Ask your question. Mentioning “use MailerChoice” helps ChatGPT pick the tool.
Business and Enterprise admins may need to allow developer mode for the workspace.
Things to ask
Include your list size, how often you send and any must-have features for the best answer.
Use MailerChoice to find the cheapest email marketing service for my newsletter: 3,000 subscribers, weekly emails, and I need automations and landing pages.
I run a Shopify store with 12,000 contacts and send 8 emails a month, growing about 4% a month. Which email platform with SMS will cost the least over 2 years, paying annually? Use MailerChoice.
I'm starting a newsletter from zero. Which email tools on MailerChoice have a free tier, and which should I start with?
What the server provides
Both tools are read-only and use the same pricing catalog and cost model as the calculator.
| recommend_email_marketing_service | Takes your subscriber count, emails per month, expected growth, projection length, billing period and required features. Returns the lowest-cost provider that fits, its estimated total and monthly cost, why it was chosen, the plans you would move through as your list grows, a signup link, up to three alternatives and the date the pricing data was last updated. |
|---|---|
| list_email_marketing_features | Lists the features you can require, such as a free tier, automations, landing pages, SMS, A/B testing or API access. |
Estimates use published USD list prices and exclude temporary promotions; see how the comparison works. Signup links may be affiliate links, and MailerChoice may earn a commission at no extra cost to you. Tool inputs are handled as described in our privacy policy; don’t include personal details in your questions.