Once you've created a new workflow, you'll add an "Email health and fatigue automation" step to your workflow. The email health and frequency automation is designed to automatically suppress the right number of people for you to reach optimal email health. To do this, you need to enter your average open rate from the last 30 days. To find this number, view the HubSpot Email Health dashboard. Select your average open rate from the menu, and press "Save" as shown below: