Online Help Most mail is dropped at the Main Post Office at Memphis, Tennessee or the Bulk Mail Center in Memphis, which is one of only 21 facilities in the United States. Sometimes companies ask us to prepare their mailings so they can drop it at their local post office. In this case, we ship the mail to them with all the paperwork to drop the mail locally. If you want to drop your mail locally, just make a note in the comments field at the bottom of your order and we'll call to discuss.