text: when the postal service raises mailing rates? why should you have to buy a 2 cent stamp just to mail a envelope ! i hate that they should honor all old stamps as 1st class ! is it our fault they printed too many ? the us postal service is always running at a loss.  they have to try to cut that loss, so we're stuck with buying 2 cent stamps.  anywho, many companies, ie. credit card companies, will pay for the missing postage when it's addressed to them.  that's how my husband and i went for months without even realizing the rate had been changed.