How many stamps to use on a bubble mailer

The number of stamps needed for a bubble mailer depends on the weight and size of the package, as well as the destination zip code. Here are some general guidelines:

• For a standard-sized bubble mailer (9" x 12" x 1/2") weighing up to 1 pound, you may need:
  • 1-2 Forever Stamps (currently $0.55 each) for domestic mail (within the United States)
  • 2-3 International Forever Stamps (currently $1.20 each) for international mail
• For a larger bubble mailer (12" x 15" x 1/2") weighing up to 2 pounds, you may need:
  • 2-3 Forever Stamps for domestic mail
  • 3-4 International Forever Stamps for international mail
• For a very large or heavy bubble mailer (e.g. 18" x 24" x 1/2"), you may need:
  • 3-5 Forever Stamps for domestic mail
  • 5-6 International Forever Stamps for international mail

Keep in mind that these are general estimates, and the actual postage required may vary depending on the specific dimensions and weight of your package. You can use the USPS Postage Calculator tool to get a more accurate estimate of the postage needed for your bubble mailer.

It's also important to note that bubble mailers are considered "flat" mail, which means they are charged by weight and size, rather than by volume. This means that even if your bubble mailer is large, it may still only require a single stamp if it weighs less than 1 pound.