Companies send mail to consumers for a variety of reasons, including billing statements, advertisements or upcoming appointment reminders. You can consider making an address label using Excel when sending out a mass amount of mail at one time to many customers. Related: Basic Excel Formulas and How To Use Them When should you make an address label using Excel? In this article, we explore when people use Excel to make address labels and how to do it. Using Excel to make them can save companies time when sending mail to a large number of customers. There are other capabilities you can use it for, including making address labels. Microsoft Excel is a program many industries use to input and calculate data.