How many stamps for a 8.5 by 11 bubble mailer?

The number of stamps required for an 8.5 by 11 bubble mailer depends on its weight and the mailing service you choose. For a typical first-class mail bubble mailer under 1 ounce, you would need one stamp, which covers the standard letter rate. If the mailer weighs more, you’ll need additional stamps based on the weight increments. It's best to check with your local postal service for exact rates based on weight and destination.