Follow the steps below to trigger an automation to run when a contact opens your one-to-one email.
1. Click "Automations" on the leftside navigation.
2. Click “New Automation.”
3. Click "Start from Scratch" and click "Continue."
4. Click the "Opens/Reads an Email" trigger located in the trigger modal and click "Continue."
5. Click the "When a contact opens a personal email" option.
6. Click the "Runs" dropdown to select either “Runs once” or “Runs Multiple times.
7. Click the "Add Start" button.
For more information on how to configure your start triggers, see this guide.