As of November 23, 2008, mailing lists will have to undergo address-correction processing no more than 95 days before being used in a First-Class Mail job, a shortening of the current 185-day rule. More significantly, that rule will also apply to Standard Mail.

Under the current Move Update requirement for First-Class presort and automation discounts, “Each address and associated occupant name used on the mail pieces in a mailing must be updated within 185 days before the mailing date, with one of the USPS-approved methods.