Typically, Standard Mail delivery takes 10 to 14 days. Standard Mail is a special classification the U.S. Postal Service offers to businesses and organizations that need to mail many identical letters, catalogs or publications not requiring quick delivery.What is the phone number for US Postal Service?
The customer service number of United States Postal Service is 800-275-8777Does the US Postal Service deliver mail on Saturday?
The United States Postal Service (USPS) delivers both mail and parcels on Saturday; a proposed plan would cease Saturday mail delivery, but would continue with parcel delivery.