MCP Collection

Postfleet MCP Server

Give your AI agent an inbox: send, receive and reply to email over MCP or REST.

Communication MIT license Added Oct 27, 2026 Hosted / remote ✓ Verified Oct 27 · sign-in required

Postfleet is a Communication MCP (Model Context Protocol) server: Give your AI agent an inbox: send, receive and reply to email over MCP or REST. It is MIT-licensed and available as a hosted endpoint, so it works with no local install. Listed on MCP Collection since October 2026.

About Postfleet

Email infrastructure for AI agents. Inbound messages are screened for prompt injection, classified, and extracted to your schema before entering your workflow. Hosted MCP server (streamable HTTP) authenticated with a Bearer pf_ API key; free tier, no card.

Live status

The endpoint answered our daily check on Oct 27, 2026 and asks for sign-in (OAuth or an API key) before it lists its tools.

How to connect Postfleet to Claude, Cursor or VS Code

Postfleet runs as a hosted remote MCP server at https://api.postfleet.ai/api/mcp. Add that URL to your MCP client's config (Claude Code, Cursor, Windsurf or VS Code) and the tools appear immediately, no install required.

{
  "mcpServers": {
    "postfleet": {
      "url": "https://api.postfleet.ai/api/mcp"
    }
  }
}

Claude Code: claude mcp add --transport http postfleet https://api.postfleet.ai/api/mcp. Servers that require OAuth or an API key will prompt on first use.

Postfleet FAQ

What is Postfleet?

Postfleet is a Model Context Protocol (MCP) server in the Communication category. Give your AI agent an inbox: send, receive and reply to email over MCP or REST. MCP servers expose tools that AI assistants like Claude can call during a conversation.

How do I use Postfleet with Claude or Cursor?

Postfleet runs as a hosted remote MCP server at https://api.postfleet.ai/api/mcp. Add that URL to your MCP client's config (Claude Code, Cursor, Windsurf or VS Code) and the tools appear immediately, no install required.

Is Postfleet free to use?

Postfleet is published under the MIT license, so the software itself is free to run. Hosted or API-backed servers may have their own usage tiers; check the project homepage.

Is the Postfleet MCP server online?

Yes. MCP Collection checks the endpoint every day; it last answered on Oct 27, 2026 and asks for sign-in (OAuth or an API key) before listing tools.

Where is the source code for Postfleet?

The source is at github.com/Thestral12/postfleet-mcp.

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