Koskamo

Swarmail MCP

Swarmail is an MCP server and CLI that enables mail communication between coding-agent sessions on one or multiple machines. It provides a threaded inbox with full-text search, file reservations, and wake-on-mail capabilities. It runs as a single Bun binary with a SQLite database, supporting integration with hosts like Claude Code, Cursor, and Codex.

Package and access

Local package with source-attributed installation metadata. Koskamo does not execute packages during review.

Swarmail MCP logo, by bompusCommunity listingLocal stdioSource reviewed; not executedPublished by bompus
Vendor documentation

What you can do with it

  • Send mail between coding-agent sessions
  • Access a threaded inbox with full-text search
  • Manage advisory file reservations
  • Wake agent sessions when mail arrives

Source and maintenance

Community listingRegistry 0.8.0
mcp-registry: io.github.bompus/swarmail@0.8.0Source repositoryProject website
Maintenance checked

Packages and installation

Source-provided package data. Koskamo has not executed or live-probed this package.

swarmail-mcp 0.8.0

npmnpx
swarmail-mcp package definition
{
  "version": "0.8.0",
  "transport": "stdio",
  "identifier": "swarmail-mcp",
  "runtimeHint": "npx",
  "registryType": "npm",
  "environmentVariables": [
    {
      "name": "SWARMAIL_URL",
      "default": "http://127.0.0.1:18765/mcp/",
      "description": "MCP endpoint of the running Swarmail server"
    }
  ]
}

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

Connect from your client

Each snippet configures the same source-provided package; replace placeholders before use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.
Cursor configuration
{
  "mcpServers": {
    "swarmail-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "swarmail-mcp@0.8.0"
      ],
      "env": {
        "SWARMAIL_URL": "<YOUR_SWARMAIL_URL>"
      }
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.
Cline configuration
{
  "mcpServers": {
    "swarmail-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "swarmail-mcp@0.8.0"
      ],
      "env": {
        "SWARMAIL_URL": "<YOUR_SWARMAIL_URL>"
      }
    }
  }
}

VS Code

Merge this local stdio configuration, replace every placeholder environment value, and restart VS Code. Koskamo has not executed this package.
VS Code configuration
{
  "servers": {
    "swarmail-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "swarmail-mcp@0.8.0"
      ],
      "env": {
        "SWARMAIL_URL": "<YOUR_SWARMAIL_URL>"
      }
    }
  }
}

Claude Desktop

Merge this local stdio configuration, replace every placeholder environment value, and restart Claude Desktop. Koskamo has not executed this package.
Claude Desktop configuration
{
  "mcpServers": {
    "swarmail-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "swarmail-mcp@0.8.0"
      ],
      "env": {
        "SWARMAIL_URL": "<YOUR_SWARMAIL_URL>"
      }
    }
  }
}

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