Which method is exclusive to commercial users for postage payment?

The use of postage meters is a method exclusive to commercial users for postage payment because it allows businesses to print postage directly onto their mail pieces, streamlining the process of sending large volumes of mail. Postage meters are designed to handle high-volume mailing while providing the convenience of online management and tracking of postage expenses.

This method eliminates the need for purchasing individual stamps or using cash, making it particularly beneficial for businesses that regularly engage in shipping and mailing activities. The ability to pay for postage in bulk and the convenience of being able to weigh, print, and affix postage at the workplace significantly enhance operational efficiency for commercial users.

In contrast, options such as checks, cash, and stamps are methods available to both individual and commercial users, rather than being exclusive to businesses. Checks can be used for various postal transactions, cash is a universal payment option for smaller, individual transactions, and stamps can be purchased and used by anyone for personal or business mail. Hence, postage meters stand out as the definitive postage payment method for commercial users.