Gmail MCP Server (GongRzhe) vs Slack MCP Server (korotovsky)

A side-by-side comparison of two Communication servers — tools, transport, auth, maintenance, and copy-paste config for each.

	Gmail MCP Server (GongRzhe) Gmail MCP with auto OAuth: send, search, label and manage email Verified stdio (local) OAuth TypeScript	Slack MCP Server (korotovsky) Powerful Slack MCP with stdio/SSE/HTTP, DMs, group DMs and no-admin token auth Verified stdio (local) API key Go
Category	Communication	Communication
Language	TypeScript	Go
Transport	stdio (local)	stdio (local)
Auth	OAuth	API key
GitHub stars	1.1k	1.7k
Last commit	3 months ago	1 month ago
Verified
Actively maintained
Install	`npx -y @gongrzhe/server-gmail-autoauth-mcp`	`npx -y slack-mcp-server@latest --transport stdio`
Repo	Open	Open

Verdict

Pick Gmail MCP Server (GongRzhe) if you prefer its approach (gmail mcp with auto oauth: send, search, label and manage email).

Pick Slack MCP Server (korotovsky) if you prefer the more popular, battle-tested option.

Add Gmail MCP Server (GongRzhe)

Install / run

npx -y @gongrzhe/server-gmail-autoauth-mcp

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "gmail-mcp-server-gongrzhe": {
      "command": "npx",
      "args": [
        "-y",
        "@gongrzhe/server-gmail-autoauth-mcp"
      ]
    }
  }
}

Add Slack MCP Server (korotovsky)

Install / run

npx -y slack-mcp-server@latest --transport stdio

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "slack-mcp-server-korotovsky": {
      "command": "npx",
      "args": [
        "-y",
        "slack-mcp-server@latest",
        "--transport",
        "stdio"
      ],
      "env": {
        "SLACK_MCP_XOXP_TOKEN": "<your-slack-user-oauth-token-xoxp>"
      }
    }
  }
}

FAQ

Gmail MCP Server (GongRzhe) or Slack MCP Server (korotovsky) — which is better?

Pick Gmail MCP Server (GongRzhe) if you prefer its approach (gmail mcp with auto oauth: send, search, label and manage email). Pick Slack MCP Server (korotovsky) if you prefer the more popular, battle-tested option.

Can I use both Gmail MCP Server (GongRzhe) and Slack MCP Server (korotovsky)?

Yes — MCP clients let you enable multiple servers at once. Add both configs to your client's mcpServers and use whichever tool fits the task.

Do Gmail MCP Server (GongRzhe) and Slack MCP Server (korotovsky) work with Claude, Cursor and Windsurf?

Both do. Copy the per-client config below into Claude Desktop, Cursor, or Windsurf.

View Gmail MCP Server (GongRzhe) →View Slack MCP Server (korotovsky) →More comparisons →