What is the procedure called when customers prepare mailings in exchange for commercial prices?

The correct term for the procedure in which customers prepare mailings to receive commercial prices is "Presort." This process involves organizing mail based on certain criteria, such as destination, to achieve cost savings when mailing in larger quantities. By presorting their mail, businesses can enhance delivery efficiency and reduce postage rates since postal services typically offer discounts for accurately prepared bulk mail.

This process often requires businesses to sort their mail into specific categories before it is sent out, allowing them to take advantage of lower mailing rates as they are essentially doing part of the postal service's job. This is particularly beneficial for businesses that send out large volumes of mail regularly.