Postmark MCP Server

Base URL: https://api.postmarkapp.com

Install

Quick Start (recommended)

SERVER_API_TOKEN_API_KEY=YOUR_SERVER_API_TOKEN_API_KEY \
ACCOUNT_API_TOKEN_API_KEY=YOUR_ACCOUNT_API_TOKEN_API_KEY \
uvx mcparmory-postmark

With pip

pip install mcparmory-postmark
SERVER_API_TOKEN_API_KEY=YOUR_SERVER_API_TOKEN_API_KEY \
ACCOUNT_API_TOKEN_API_KEY=YOUR_ACCOUNT_API_TOKEN_API_KEY \
mcparmory-postmark

MCP Client Configuration

Add to your MCP client config (e.g. Claude Desktop, Cursor, Codex):

{
  "mcpServers": {
    "postmark": {
      "command": "uvx",
      "args": ["mcparmory-postmark"],
      "env": {
        "SERVER_API_TOKEN_API_KEY": "YOUR_SERVER_API_TOKEN_API_KEY",
        "ACCOUNT_API_TOKEN_API_KEY": "YOUR_ACCOUNT_API_TOKEN_API_KEY"
      }
    }
  }
}

Credentials

Set the following environment variables (via MCP client env config, shell export, or .env file):

• SERVER_API_TOKEN_API_KEY — API Key Authentication (X-Postmark-Server-Token)
• ACCOUNT_API_TOKEN_API_KEY — API Key Authentication (X-Postmark-Account-Token)

Do not commit credentials to version control.

Run Locally

First, configure your credentials in .env (see Credentials above).

pip install -r requirements.txt
python server.py

Connect MCP Client

Edit .mcp.json and replace <SERVER_DIR> with the absolute path to this directory, then add to your MCP client configuration.

Example (if server is at /home/user/mcp-servers/postmark):

{
  "mcpServers": {
    "postmark": {
      "command": "python",
      "args": ["/home/user/mcp-servers/postmark/server.py"]
    }
  }
}

Docker

Pre-built image (recommended)

docker run -p 8000:8000 \
  -e SERVER_API_TOKEN_API_KEY=YOUR_SERVER_API_TOKEN_API_KEY \
  -e ACCOUNT_API_TOKEN_API_KEY=YOUR_ACCOUNT_API_TOKEN_API_KEY \
  ghcr.io/mcparmory/postmark:latest

Build from source

First, configure your credentials in .env (see Credentials above).

docker build -t postmark .
docker run -p 8000:8000 --env-file .env postmark

Before running, make sure ports 8000 are free.### MCP client config (Docker)

For Docker, use SSE transport in your MCP client config:

{
  "mcpServers": {
    "postmark": {
      "type": "sse",
      "url": "http://localhost:8000/sse"
    }
  }
}

Files

• .env - Credentials and server configuration
• .mcp.json - MCP client config template
• Dockerfile - Container build
• LICENSE - MIT license for this generated code
• requirements.txt - Python dependencies
• README.md - This file
• server.py - MCP server entry point
• _auth.py - Authentication handlers
• _models.py - Request/response models
• _validators.py - Input validation

Note: Files starting with . are hidden by default on macOS/Linux. Use ls -a in terminal or enable "Show hidden files" in your file manager to see .env and .mcp.json.

_{Generated by MCP Blacksmith · Quickstart docs · Report a bug}