They answer questions about postage rates and other postal matters. They also fill out forms for registered or insured mail. Sometimes clerks help customers make damaged package claims. These clerks are also known as window clerks. Many other postal clerks work behind the scenes.
Mail handlers unload the sacks of incoming mail.
They separate letters from magazines, packages, and newspapers. They then transport each type of mail to its sorting area. Mail handlers may load mail into automated letter sorting machines. Other duties include canceling stamps and re-wrapping damaged packages. Another group of clerks sorts letters once the stamps have been canceled.