How a CD is packaged affects how much postage it needs. As of 2014, the least expensive way to mail a CD costs 70 cents, which is the 2-ounce letter rate. If the package is heavier or thicker, the first class package rate of $2.32 may be needed.
For the 70-cent, 2-ounce letter rate, the CD should be put in a bubble wrap envelope that is 6 inches by 9 inches. This size fits within the limits of what can be sent in the mail as a letter. It doesn’t weigh more than 2 ounces and isn’t more than 1/4 inch thick. As of 2014, the CD can be wrapped in cereal-box-grade cardboard and mailed in an envelope that is 6 inches by 9 inches for the 2-ounce letter rate plus a 21-cent surcharge, for a total of 91 cents. As of 2014, you have to pay $2.32 for a first-class parcel that weighs up to 3 ounces and is thicker than 1/4 inch.
