Official Postmark MCP server for sending emails via Claude and AI assistants
Postmark MCP lets Claude, Cursor and other MCP clients work with Postmark MCP directly. Official Postmark MCP server for sending emails via Claude and AI assistants.
Send emails with Postmark using Claude and other MCP-compatible AI assistants.
sendEmail — Sends a transactional email to one recipient or up to 50 recipients.sendEmailWithTemplate — Provide either templateId (number) or templateAlias (string), not both.sendBatch — Sends up to 500 emails in a single API call. Each message is fully independent — its own recipient, subject, and body. This wraps Postmark's synchronous batch endpoint (POST /email/batch), which returns immediate per-msendBatchWithTemplate — Sends up to 500 templated emails — same template, per-recipient template models. Ideal for "render this onboarding template for each new user" flows.listTemplates — Lists saved templates on this server. Returns the first 100 templates; if a server has more than 100, pagination is not yet supported and the response will indicate that results are truncated.getTemplate — Retrieves a single template's full content (HTML body, text body, subject, type).createTemplate — Creates a new template. Requires name. At least one of htmlBody or textBody must be provided.Compare MCP servers by category, or browse hosted MCP servers if you prefer an endpoint over a local process.
Check the linked publisher documentation and your connected client's tool list. Names and availability can vary with the server version and account permissions.
| Tool | What it does |
|---|---|
| Category | Tools |
| Read-only | All remaining 12 tools |
{
"mcpServers": {
"postmark": {
"command": "npx",
"args": [
"-y",
"@activecampaign/postmark-mcp"
],
"env": {
"POSTMARK_SERVER_TOKEN": "YOUR_POSTMARK_SERVER_TOKEN",
"DEFAULT_SENDER_EMAIL": "your-sender-email@example.com",
"DEFAULT_MESSAGE_STREAM": "outbound"
}
}
}
}From the project documentation. Replace placeholders and example paths before connecting.
| Variable | Description | Required |
|---|---|---|
| POSTMARK_SERVER_TOKEN | Declared in the maintainer’s client configuration. | Check documentation |
| DEFAULT_SENDER_EMAIL | Declared in the maintainer’s client configuration. | Check documentation |
| DEFAULT_MESSAGE_STREAM | Declared in the maintainer’s client configuration. | Check documentation |
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