(1) The process by which a mailer prepares mail so that it is sorted to the finest extent required by the standards for the price claimed. Generally, presort is performed sequentially, from the lowest (finest) level (e.g., 5-digit) to the highest level (e.g., mixed ADC), to those destinations specified by standard, and is generally completed at each level before the next level is prepared. Not all presort levels apply to all mailings. For some automation price categories, all levels may be optional. (2) To prepare mail by presort levels to qualify for specific prices.
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