What is the minimum number of tabs required for letter-size booklet type mailpieces?

For letter-size booklet type mailpieces, the guidelines stipulate that a minimum of three tabs are required to ensure the mailpiece is secure and meets the postal regulations. The purpose of using tabs is to hold the pages of the booklet together so that the mailpiece remains intact during handling and transit.

Using three tabs helps to provide adequate support at various points along the mailpiece, reducing the risk of it coming apart or being damaged. This requirement is particularly important to maintain the integrity of the contents, which may include multiple pages that could otherwise shift or separate if not properly secured.

This requirement is grounded in postal standards, which prioritize both the security of the material being sent and the efficient processing of mail. Ensuring that there are enough tabs to hold the pages firmly in place prevents potential issues that could arise during automatic sorting and delivery.