What should I do if I see a heap size issue?

Heap size is the amount of memory that Salesforce allocates to a process running in the system. If a job (such as an automation or email campaign process) uses too much memory, it can hit a heap size limit, causing errors or slowing down performance.

Like all third-party Salesforce applications, we will use Salesforce resources.  But we have tuned our product so that it works within the limits Salesforce sets. A heap size issue can occur for several reasons.  However, typically, it is due to a process that interacts with our code in the same transaction. 

We generally ask that you review any custom code or triggers that you might have to make sure they work in batch.  On our side, we can tune settings when we have granted access. For example, we can update Mailing Rates from the default of 500 to 200. Or we can turn off things like audit.