What should a carrier do if there is no response from a customer for a certified letter?

When a carrier encounters a situation where there is no response from a customer for a certified letter, the appropriate action is to fill out PS Form 3849 and leave it in the mailbox. This form, often referred to as a "We attempted to deliver your item" notice, informs the customer that a certified letter was attempted for delivery. It provides essential information about the attempt, including details on how the customer can claim the item, which is crucial for maintaining effective communication and service.

By leaving this form, the carrier ensures the customer is aware of the delivery attempt and has clear instructions on how to proceed, whether that be picking up the item at the post office or arranging for redelivery. This action upholds the standards of postal service communication and customer service.

Other options, such as leaving the item without notification, returning it to the post office without any notice, or simply reporting the situation to a supervisor, do not provide the customer with the necessary information to successfully claim their item. Therefore, these alternatives would not fulfill the obligation to inform the customer properly.