The Email Tracking step queries the email delivery service for engagement data about a previously sent email. It takes the message ID from a Send Email step's output and returns delivery status, open/click counts, bounce information, and spam complaint data. The recipient address is read from the delivery service response automatically. As a side effect, it automatically suppresses addresses that hard bounced, soft bounced, or received a spam complaint.

• Track whether recipients opened or clicked links in a marketing email
• Automatically suppress bounced email addresses to maintain list hygiene
• Tailor follow-up emails based on engagement. Send a different message to recipients who opened versus those who didn't
• Monitor delivery rates and spam complaints across an email campaign
• Build re-engagement sequences that skip unresponsive contacts

The step reads a message_id (from the Send Email step's output) and queries the delivery service for that message's engagement data. It returns fields like delivered, opened, clicked, bounced, and spam_complaint. If a hard bounce, soft bounce, or spam complaint is detected, the step automatically writes the recipient's email to the org's suppression list with the appropriate reason. This auto-suppression happens without needing a separate Suppression List step or Condition step. The lookup delay is configured via the step's delay setting (default: 2 days) to allow time for engagement data to accumulate before querying.