Email Send API MCP Server

Send emails programmatically via Resend. Text and HTML. x402 micropayment.

Local serverstdio

What is the Email Send API MCP server?

Email Send API MCP server exists for a simple reason — assistants are far more useful when they can act on Email Send API directly instead of describing what you should do. Send emails programmatically via Resend. Text and HTML. x402 micropayment.

What you get

Send emails programmatically via Resend -- text or HTML body, delivery status, message ID. Transactional email. Pay-per-call via x402 (USDC on Base L2) -- no API key, no signup, no rate-limit wall.

What the assistant can call

Once Email Send API is connected, these are the calls the assistant has available:

  • email_send_message — POST

Setting it up

Setup follows the usual MCP pattern — install or clone the server, register it in your client's configuration file, restart the client. The configuration blocks on this page cover the common clients.

Choosing this one

Among the team communication options, the useful question is rarely "what can it do" but "what does it cost you to run" — permissions, credentials, and how much of your context its toolset consumes. Email Send API's toolset — email_send_message — is a fair guide to whether it matches your workflow. It is maintained by Br0ski777; worth a glance at recent repository activity before you build anything load-bearing on it.

SyncDev reviews every entry in this directory against the project's own documentation before publishing, and revisits them as servers change.

Before you rely on it

  • It runs with your machine's permissions. That is convenient and also the reason to think about what you point it at before you approve a tool call.
  • MCP clients confirm each tool call by default. Leave that on until you have watched what the email send api mcp server does with a few real requests.

Available tools

ToolWhat it does
email_send_messagePOST

How to install the Email Send API MCP server

{
  "mcpServers": {
    "email-send": {
      "url": "https://email-send.api.klymax402.com/mcp"
    }
  }
}

Configuration as documented by the project. Restart the client after saving.

Example prompts to try

  • Use Email Send API to email send message.

Frequently asked questions

It connects Email Send API to MCP-compatible AI assistants such as Claude and Cursor, exposing 1 tool (email_send_message) that the assistant can call on your behalf. Instead of copying data back and forth by hand, the assistant works with Email Send API directly.