Make’s help center walks through an agent that reads lead emails, researches the sender’s company, scores the lead, checks your calendar and leaves a draft reply in Gmail with a Slack link for you to review.
The open-source Google Workspace MCP server exposes Calendar, Gmail and other Workspace tools to Claude Desktop, Claude Code and other MCP clients, using your own OAuth client and optional read-only mode.
Inbox Zero works in the background on Gmail or Outlook: you write rules in plain English, and it files mail, drafts replies in your style, unsubscribes in bulk and briefs you before meetings.