Lettr Cursor Plugin

Cursor plugin for Lettr — the email API for developers.

Send emails, manage templates, verify domains, and build email integrations directly from Cursor with AI-powered assistance.

Plugin

• lettr — MCP server, rules, skills, agent, and commands for working with Lettr

Getting started

1. Install the plugin in Cursor.
2. Set the LETTR_API_KEY environment variable with your key from app.lettr.com.
3. Start using Lettr — ask "List my sending domains" or "Send a test email" to verify the setup.

See plugins/lettr/README.md for the full feature list.

Validation

node scripts/validate-template.mjs

Links

• Lettr Documentation
• Lettr Dashboard
• MCP Server (npm)