What must customers do to maintain the Firm Holdout service?

To maintain the Firm Holdout service, customers are required to pick up their mail at least once every 10 days. This is an essential condition of the service because it ensures that the post office can effectively manage the accumulation of mail. When customers do not pick up their mail within this timeframe, it could lead to issues like overflow or potential loss of important communications. Regular retrieval is a way to maintain the service effectively and ensures that customers remain engaged with their mail collection routine, which is vital for the benefits associated with the Firm Holdout service.