Mailing tab

You're referring to a "mailing tab"!

A mailing tab is a small paper tab or label that is attached to an envelope or package to indicate the recipient's address. It's usually a small piece of paper or cardstock with the address printed or written on it, and is used to make it easy to identify the recipient's address without having to write it out again.

Mailing tabs are commonly used in business settings, such as in offices or mailrooms, where they can be used to quickly and easily address envelopes or packages. They're also useful for individuals who need to send out a large number of items, such as holiday cards or invitations.

Some common features of mailing tabs include:

• Pre-printed address labels: These tabs have the recipient's address already printed on them, making it easy to simply peel and stick.
• Blank tabs: These tabs are blank and can be written on by hand.
• Customizable tabs: Some mailing tabs can be customized with the company's logo or other information.
• Adhesive backing: Many mailing tabs have an adhesive backing that makes it easy to stick them to envelopes or packages.

Overall, mailing tabs are a convenient and efficient way to address envelopes and packages, and can save time and effort in the process.