Addressing machines are used to imprint names and addresses on envelopes and letters. These machines are used in newspaper offices, banks and insurance companies. There are three types of addressing machines called metal plate machine, film stencil machine and spirit master process.

Franking machine is an imprinting machine used to affix postage stamps on the folders and letters. These are operated manually or electrically. Impression stamps may include paid, signature stamp, date, time stamp, and other numbering devices.