What is the key difference between Stumpy and Atomic Mail?

Stumpy belongs to the Communication category with local stdio execution, while Atomic Mail belongs to the Communication category with local stdio execution.

How do I install Stumpy or Atomic Mail in Claude Desktop or Cursor?

Copy the mcpServers JSON configuration snippet provided on this page into your claude_desktop_config.json or ~/.cursor/mcp.json file and restart your AI client.

Are Stumpy and Atomic Mail free or paid?

Stumpy operates under a Free / Open Source model (No auth required). Atomic Mail operates under a Free / Open Source model (No auth required).

Which MCP server has more tools and community activity?

Stumpy lists 0 tools with 1 views and 0 GitHub stars. Atomic Mail lists 0 tools with 1 views and 262 GitHub stars.

Can I use both Stumpy and Atomic Mail together in the same MCP host?

Yes! MCP hosts like Claude Desktop, Cursor, Windsurf, Cline, and VS Code support configuring multiple servers under the mcpServers object simultaneously.

Side-by-Side Model Context Protocol Comparison

Stumpy vs Atomic Mail

In-depth architectural comparison of the Stumpy and Atomic Mail MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.

At a Glance & Executive Verdict

Stumpy

Communication · Local stdio

Quality: 37/100 (Fair) | Auth: No auth required

Atomic Mail

Communication · Local stdio

Quality: 45/100 (Fair) | Auth: No auth required

Verdict Summary: Choose Stumpy if you need specialized Communication tools running via a local process. Choose Atomic Mail if your workspace requires Communication integration with local subprocess execution. Both servers can be configured concurrently in your client's mcpServers manifest.

Which MCP Server Should You Choose?

Choose Stumpy when:

You need dedicated capabilities in the Communication domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: No auth required (Free / Open Source).

Explore Stumpy Details

Choose Atomic Mail when:

You need dedicated capabilities in the Communication domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: No auth required (Free / Open Source).

Explore Atomic Mail Details

Feature & Specification Comparison

Specification	S Stumpy Communication	Atomic Mail Communication
Summary	Persistent AI agents that run 24/7 in your Slack, Telegram, SMS, or email.	Programmable email inbox for AI agents — JMAP, PoW auth, stdio MCP server.
Category & Scope	Communication	Communication
Quality signal

Tools & Capabilities Breakdown

Stumpy Tools (0)

No explicit tool names declared in metadata yet. Check project README on main listing page.

Atomic Mail Tools (0)

No explicit tool names declared in metadata yet. Check project README on main listing page.

Ready-to-Paste Client Configurations

Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).

Stumpy Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "stumpy": {
      "command": "uvx",
      "args": [
        "stumpy"
      ]
    }
  }
}

Atomic Mail Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "atomic-mail": {
      "command": "npx",
      "args": [
        "-y",
        "--package=@atomicmail/agent-skill-github",
        "atomicmail"
      ]
    }
  }
}

Frequently Asked Questions

Stumpy is categorized under Communication and uses a local stdio subprocess. In contrast, Atomic Mail belongs to Communication using local stdio subprocess. Select Stumpy when you need capabilities focused on communication and Atomic Mail when you require tools for communication.

More alternatives to Stumpy More alternatives to Atomic Mail Communication category hub Canonical compare URL