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

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

	Slack MCP Server (Ubie) Bot-token Slack MCP for posting, reading channels and searching messages Verified stdio (local) API key Stale TypeScript	Gmail MCP Server (GongRzhe) Gmail MCP with auto OAuth: send, search, label and manage email Verified stdio (local) OAuth TypeScript
Category	Communication	Communication
Language	TypeScript	TypeScript
Transport	stdio (local)	stdio (local)
Auth	API key	OAuth
GitHub stars	110	1.1k
Last commit	9 months ago	3 months ago
Verified
Actively maintained
Install	`npx -y @ubie-oss/slack-mcp-server`	`npx -y @gongrzhe/server-gmail-autoauth-mcp`
Repo	Open	Open

Verdict

Pick Slack MCP Server (Ubie) if you prefer its approach (bot-token slack mcp for posting, reading channels and searching messages).

Pick Gmail MCP Server (GongRzhe) if you prefer the more popular, battle-tested option, and you need the broadest set of tools.

Add Slack MCP Server (Ubie)

Install / run

npx -y @ubie-oss/slack-mcp-server

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

{
  "mcpServers": {
    "slack-mcp-server-ubie": {
      "command": "npx",
      "args": [
        "-y",
        "@ubie-oss/slack-mcp-server"
      ],
      "env": {
        "SLACK_BOT_TOKEN": "<your-slack-bot-token-xoxb>",
        "SLACK_USER_TOKEN": "<your-slack-user-token-xoxp>"
      }
    }
  }
}

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"
      ]
    }
  }
}

FAQ

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

Pick Slack MCP Server (Ubie) if you prefer its approach (bot-token slack mcp for posting, reading channels and searching messages). Pick Gmail MCP Server (GongRzhe) if you prefer the more popular, battle-tested option, and you need the broadest set of tools.

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

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

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

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