Brew exposes an MCP server at https://brew.new/mcp so agents can create and schedule email. I wired it into Cursor alongside our launch checklist repo.

Workflow: PM drops launch notes in a markdown file, I ask Cursor to draft a campaign in Brew using our brand, review the preview link, approve or edit, then send. The agent handles the tedious first pass; I keep final say.

This is the first time AI email felt like infrastructure, not a feature inside an editor. Klaviyo and Mailchimp do not expose that agent layer the same way.