"Philips Hue" matching MCP connectors:

Teaches AI to write HTML email that renders in Outlook, Gmail, and Apple Mail. 19 rules, 6 comps.

Free hosted MCP server that connects ChatGPT and Claude (claude.ai, Claude Code) to multiple Gmail, Google Calendar, Google Drive (read-only) and Google Contacts accounts, Slack workspaces and Notion through one connection URL. Search, read and act across every connected account at once, with a memory shared across your AI assistants. OAuth sign-in. Outlook / Microsoft 365 are not supported.

Higgs HubBOAuth

pro.higgshub

Gmail, Outlook, Drive, OneDrive and calendars for AI agents. Many accounts, one endpoint, audit log.

Multiple Google accounts (Gmail, Calendar, Drive, Contacts, Tasks) in one Claude connector.