The USPS says 80% of services won’t be impacted by the move and all deliveries will still fall within the existing five-day service standard day range for First-Class Mail. Day ranges for end-to-end marketing mail, periodicals and package services will be shortened.

The United States Postal Service (USPS) has announced that major updates are on the way. These updates specifically involve “refined service standards” for certain mail, and will take effect in a little over a month.