Claude
Add the server URL as a custom connector once on claude.ai and approve in the browser; the connector is then available in Claude on the web, Desktop, and mobile.
Add a custom connector
On claude.ai: Settings → Connectors → Add custom connector. Paste the server URL below and complete the browser approval. No key to copy. Your client opens Unitpost in the browser — pick a workspace, approve the scopes, and you're connected. Tokens refresh automatically.
Remote MCP server URL https://mcp.unitpost.com/mcp On a Team or Enterprise plan, an Owner may need to add the connector for the organization first.
Verify
Open a chat, check the unitpost connector is enabled in the tools menu, and ask Claude to list your sending domains.
Send a test
Ask Claude to send a test email from a verified domain. Send tools are marked destructive, so Claude asks before anything goes out. Confirm it in Unitpost Activity.
No browser on this machine? For headless setups, CI, SSH, or clients that can only paste a key, use the API-key setup instead.