Zapier's official Agents guide spells out an email-management agent that drafts replies, creates tasks for urgent requests, and archives spam/marketing—wired to Gmail plus a task app like Trello.
Each partner runs their own Duobot; the two Grok Bots talk so groceries, bills, gifts, date night, vacation planning, and a shared To Duo list stay in sync on one calendar and Trello board.