Home / Developers / MCP server

MCP server for AI tools

Let your AI assistant check emails and clean lists for you, using the same API key and credits as the REST API.

Updated 2026-10-19

TL;DR

  • Server URL: https://mailexchange.com/api/mcp (Streamable HTTP).
  • Auth: send your API key as Authorization: Bearer mx_live_.... Create one in your account.
  • Credits: the same as the API: one per address, duplicates and unknown results refunded.

Tools your AI can use

ToolWhat it does
verify_emailChecks one address and returns deliverable, risky, undeliverable or unknown with the reason.
verify_emailsStarts verifying a list of up to 100,000 addresses and returns a list id.
get_listProgress and counts per state for a list.
get_list_resultsThe per-address results once a list is done.
get_accountYour credit balance and usage.

Connect it

Claude Code

claude mcp add --transport http mailexchange https://mailexchange.com/api/mcp \
  --header "Authorization: Bearer mx_live_YOUR_KEY"

Cursor, Windsurf and other clients with a JSON config

{
  "mcpServers": {
    "mailexchange": {
      "url": "https://mailexchange.com/api/mcp",
      "headers": { "Authorization": "Bearer mx_live_YOUR_KEY" }
    }
  }
}

Claude.ai, ChatGPT and other apps

Add a custom connector or MCP server in the app's settings, use the URL above, and set the Authorization header to your key where the app allows custom headers.

Try it

Ask your assistant: "Verify these 200 addresses with Mail Exchange and tell me how many will bounce." It starts a list, waits for it to finish and summarises the results.

FAQ

Does the MCP server cost extra?

No. It uses the same credits as the REST API.

Can I use the API instead?

Yes. See the email verification API and the list guide.

Start your free trial →
Start your free trial →