An after save flow is a type of flow that runs in the background after a record is saved and performs actions based on the record data or changes. An after save flow does not require user input or interaction and can be triggered by a record-triggered flow element or by an Apex trigger. In this case, you can create an after save flow that runs when a case record is updated and delivers status update email to customers based on certain criteria or conditions. Reference: https://help.salesforce.com/s/articleView?id=sf.flow_trigger_types.htm&type=5 https://help.salesforce.com/s/articleView?id=sf.flow_concepts_trigger.htm&type=5