BumbleBox
Remote MCP server (https://api.bumblebox.ai/api/mcp, OAuth 2.1 + DCR). Your AI assistant searches, reads and triages every mailbox you run (Gmail, Outlook, IMAP), lists what waits for your reply, prepares reply and campaign drafts, and tidies on request — always undoable, never a permanent deletion. Sending only at the level you set in BumbleBox (by default one tap). Pro/Business plans.