15) Answer customers' questions about postal services and regulations. 16) Complete forms that notify publishers of address changes. 17) Obtain signed receipts for registered, certified, and insured mail; collect associated charges; and complete any necessary paperwork. 18) Provide customers with change of address cards and other forms. 19) Register, certify, and insure. Search millions of jobs and get the inside scoop on companies with employee reviews, personalised salary tools, and more. Hiring? Post a job for free.