How many tabs must be used to fasten self-mailers folded at the bottom in a barcoded mailing?

When a self-mailer is folded at the bottom for barcoded mailing, it is essential to use tabs to secure the mailer and ensure it meets postal regulations. The correct answer indicates that two tabs are necessary for fastening the self-mailers. These tabs serve to keep the mailer securely closed, preventing any accidental openings during handling and transit.

Using two tabs is important because they provide adequate strength and security, especially for mailers that have a flap that could easily open. The positioning of the tabs at different points along the folder allows for a tighter seal, which is critical for the processing and delivery of the mail piece. This practice not only conforms to postal standards but also helps ensure the integrity of the contents inside the mailer.

In contrast, using either one or four tabs may not provide the necessary compliance or security. One tab can be insufficient for larger mailers, which may risk opening during mail processing. Four tabs could be excessive for a standard self-mailer and might not be needed unless the mailer has additional complexity, leading to unnecessary costs and complications. The regulation for two tabs strikes the right balance between security and efficiency for this type of mailing.