To figure out how many stamps are needed for a 6x9 bubble mailer, you'll need to consider its weight and the thickness of what you're shipping. Typically, an empty 6x9 bubble mailer from Pro Supply Global weighs around 1-2 ounces. However, the weight will increase once you add your item.
Here's a quick guideline:
-
For items up to 1 ounce: You'll need one First-Class stamp, which covers postage for up to 1 ounce.
-
For each additional ounce: Add another stamp. For example, if your 6x9 bubble mailer weighs 3 ounces, you'll need 3 stamps.
Keep in mind that if your mailer is thicker than ¾ inch or weighs more than 13 ounces, it might not qualify for First-Class Mail and may be considered a package, requiring different postage.
For the most accurate postage, weigh your filled 6x9 bubble mailer and use the USPS postage calculator or visit your local post office. This ensures you’re paying the correct amount and avoiding any delivery delays.