How must Standard Post be marked in the postage area?

Standard Post must be marked clearly in the postage area to ensure proper handling and delivery. By designating it as "Standard Post" or using the abbreviation "SP," postal workers and the postal system can quickly identify the type of service being used. This marking is crucial because it helps in sorting and prioritizing mail based on its classification.

Other markings, such as "Regular Mail" or "Priority Mail," could lead to confusion or misrouting, as these options refer to different mailing services with distinct delivery standards and pricing structures. Commercial Rate Mail pertains to bulk mailings with special pricing based on quantity, further complicating the identification process if applied inaccurately. Therefore, marking the package correctly as Standard Post or SP ensures it is processed according to the established guidelines for that specific service.