Unitpost
Remote MCP server for Unitpost, an email and SMS API. Agents in Cursor, Claude Code, Codex and other MCP clients send transactional email, campaigns and SMS, manage contacts, templates and domains, and read inbound email. Streamable HTTP at https://mcp.unitpost.com/mcp with OAuth 2.1 sign-in or an API key. One tool per API operation. Free plan includes 5,000 emails a month.
Hosted MCP Server
npx add-mcp 'https://mcp.unitpost.com/mcp'Installs into Claude Code, Codex, Cursor and more
Documentation
MCP server
Point any MCP client (Cursor, Claude, Codex, Copilot, Gemini, Windsurf) at Unitpost and it gets native tools to send email and SMS (SMS on paid plans), run campaigns, and manage contacts. Hosted; sign in with OAuth, or use a scoped API key.
Highlights
- Streamable HTTP endpoint: https://mcp.unitpost.com/mcp
- Authenticate with a workspace API key (Bearer)
- One tool per API operation
- Create the key at www.unitpost.com → Settings → API keys