Nylas MCP Server (Remote) vs Slack MCP Server (korotovsky)

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

	Nylas MCP Server (Remote) Hosted remote MCP for email, calendar and contacts across Gmail, Outlook, IMAP Verified HTTP (remote) API key Hosted	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	Hosted	Go
Transport	HTTP (remote)	stdio (local)
Auth	API key	API key
GitHub stars	40	1.7k
Last commit	1 month ago	1 month ago
Verified
Actively maintained
Install	`Add remote MCP URL https://mcp.us.nylas.com with header Authorization: Bearer <NYLAS_API_KEY>`	`npx -y slack-mcp-server@latest --transport stdio`
Repo	Open	Open

Verdict

Pick Nylas MCP Server (Remote) if you want the official, vendor-maintained server, and you want a hosted/remote server with nothing to install.

Pick Slack MCP Server (korotovsky) if you prefer the more popular, battle-tested option, and you want a local (stdio) server that keeps data on your machine.

Add Nylas MCP Server (Remote)

Install / run

Add remote MCP URL https://mcp.us.nylas.com with header Authorization: Bearer <NYLAS_API_KEY>

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

{
  "mcpServers": {
    "nylas-mcp-server-remote": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote",
        "https://mcp.us.nylas.com",
        "--header",
        "Authorization: Bearer <your-nylas-api-key>"
      ]
    }
  }
}

Claude Desktop connects to remote servers through the `mcp-remote` proxy (installed on first run via npx). Restart Claude Desktop after saving.

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

Nylas MCP Server (Remote) or Slack MCP Server (korotovsky) — which is better?

Pick Nylas MCP Server (Remote) if you want the official, vendor-maintained server, and you want a hosted/remote server with nothing to install. Pick Slack MCP Server (korotovsky) if you prefer the more popular, battle-tested option, and you want a local (stdio) server that keeps data on your machine.

Can I use both Nylas MCP Server (Remote) 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 Nylas MCP Server (Remote) 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 Nylas MCP Server (Remote) →View Slack MCP Server (korotovsky) →More comparisons →