• Every hour it finds the campaigns scheduled for the next 24 hours, and checks each A/B version on its own.
• It tests the links and images in the email.
• Claude lists every code, discount and date it finds, with the exact words.
• Plain code checks those against a Google Sheet of your live offers and the send date. Anything Claude quotes that is not in the email is thrown out.
• Slack gets one message per email: ready, ready with notes, or what to fix. If a problem is still there close to send time, you get one reminder.