# Communication MCP servers online

Check the source documentation for each connection.

1 MCP server. Also on the [web page](https://mcpdirectory.fyi/it/global/online/category/communication).

## MCP servers

1. [Substack MCP Server](https://mcpdirectory.fyi/it/global/online/substack-mcp-server.md), Sales and marketing, Online: Manage Substack publishing, subscribers, analytics, reader feeds, comments, and images through MCP.

## Other categories in Online

- [Developer tools](https://mcpdirectory.fyi/it/global/online/category/developer-tools.md): 6 MCP servers
- [Data and databases](https://mcpdirectory.fyi/it/global/online/category/data-databases.md): 2 MCP servers
- [Knowledge and memory](https://mcpdirectory.fyi/it/global/online/category/knowledge-memory.md): 2 MCP servers
- [Productivity and collaboration](https://mcpdirectory.fyi/it/global/online/category/productivity-collaboration.md): 2 MCP servers
- [Sales and marketing](https://mcpdirectory.fyi/it/global/online/category/sales-marketing.md): 2 MCP servers
- [Search and research](https://mcpdirectory.fyi/it/global/online/category/search-research.md): 2 MCP servers
- [Finance and crypto](https://mcpdirectory.fyi/it/global/online/category/finance-crypto.md): 1 MCP server
- [Security](https://mcpdirectory.fyi/it/global/online/category/security.md): 1 MCP server
- [Web and browser automation](https://mcpdirectory.fyi/it/global/online/category/web-browser-automation.md): 1 MCP server