Slack MCP Server (korotovsky) vs Resend Email MCP Server

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

	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	Resend Email MCP Server Official Resend MCP to compose and send transactional email from your assistant Verified stdio (local) API key TypeScript
Category	Communication	Communication
Language	Go	TypeScript
Transport	stdio (local)	stdio (local)
Auth	API key	API key
GitHub stars	1.7k	530
Last commit	1 month ago	20 days ago
Verified
Actively maintained
Install	`npx -y slack-mcp-server@latest --transport stdio`	`npx -y resend-mcp`
Repo	Open	Open

Verdict

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

Pick Resend Email MCP Server if you want the official, vendor-maintained server.

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>"
      }
    }
  }
}

Add Resend Email MCP Server

Install / run

npx -y resend-mcp

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

{
  "mcpServers": {
    "resend-email-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "resend-mcp"
      ],
      "env": {
        "RESEND_API_KEY": "<your-resend-api-key>"
      }
    }
  }
}

FAQ

Slack MCP Server (korotovsky) or Resend Email MCP Server — which is better?

Pick Slack MCP Server (korotovsky) if you prefer the more popular, battle-tested option. Pick Resend Email MCP Server if you want the official, vendor-maintained server.

Can I use both Slack MCP Server (korotovsky) and Resend Email MCP Server?

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 (korotovsky) and Resend Email MCP Server work with Claude, Cursor and Windsurf?

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

View Slack MCP Server (korotovsky) →View Resend Email MCP Server →More comparisons →