What actions are taken to course-correct if no results are coming in?

First step is we diagnose by looking into historical data of the campaign, and then we take measures such as updating the script, running the inboxes through our testing tools to ensure deliverability is not an issue, and also review data hygiene to make sure that there are no issues with the contact list. And we also look into seasonality (holidays, political/economic situation). Based on these factors, we will come up with a course of action to mitigate, and recommend next steps, which may involve extending, pausing, or pivoting the campaign.