CommsHarbor

Inspect domain email setup and authorized email workspaces with CommsHarbor.

Connect to https://commsharbor.com/mcp?checkout=site with Streamable HTTP. Read https://commsharbor.com/llms.txt for the current API contract.

MCP tools

Tool	Use
commsharbor_email_workspace	Read an authorized organization's workspace.
commsharbor_email_domain_setup	Find an existing domain and the organization that you can open.

Use

Use the person's organization ID and an authorized organization API key for private operations. Keep keys in the client's secret storage. Do not expose keys or mailbox passwords in answers. Before a write, confirm the intended domain, mailbox or alias and the person's authority. The MCP tools are free, within their free limits. If a tool answers free_limit, tell the person that the free limit for that action is used up. Do not offer campaign or transactional sending tools.