distributors use domestic mail to send products to independent vape shops while online companies also use the Postal Service ...

and raise shipping costs for businesses and consumers. According to USPS, the service is independent and self-financing, relying on the sales of stamps and postage, its products and services to ...

"As with mail, most competitive shipping products will retain the same service standard, some packages will have a faster standard, and some will have a slightly slower standard," USPS said in a ...