An MCP connector for mailboxes on circucity.com, circucity.se.
In ChatGPT: Settings → Connectors → Create, MCP server URL https://mcp-mail.srv1729701.hstgr.cloud/mcp, authentication OAuth. You will be sent to a sign-in page to enter the mailbox password.
In Claude: Settings → Connectors → Add custom connector with the same URL.