What does a firm holdout allow customers to do?

A firm holdout refers to a system in which a customer can receive street-address mail directly from the post office without being part of the regular home delivery system. This option is particularly beneficial for businesses or individuals who may have a higher volume of mail but do not necessarily require it to be delivered at their residence or place of business daily. By utilizing a firm holdout, customers can ensure that they obtain their mail based on a more flexible schedule, depending on their needs.

In this context, the other options do not accurately describe the function of a firm holdout. For instance, receiving mail at home instead of the office lacks the essential point that a firm holdout is inherently designed for specific mail handling parameters rather than just a choice of delivery location. Limiting mail delivery to once a week does not align with the practical implementation of a firm holdout, which can vary based on customer preferences. Lastly, the idea of only receiving packages contradicts the broader application of the firm holdout, which pertains to all types of street-address mail, not just packages.