A postal meter is a device used to print postage directly onto envelopes or packages. It allows businesses and individuals to send mail without needing to buy stamps from the post office. The meter calculates the correct postage based on the weight and destination of the mail, ensuring accurate payment for postal services. These devices are often used by companies that send large volumes of mail, as they save time and streamline the mailing process. Postal meters can be connected to the internet, enabling users to refill postage and track their mailings easily. They are a convenient alternative to traditional postage methods.