Postage is the fee paid to send letters and packages through the mail. It ensures that your items are delivered to the right place, whether it's a friend's house or a business. The cost of postage depends on the size, weight, and distance of the delivery. You can buy postage stamps or use online services to print labels for your shipments. When you send something, you attach the postage to the item, which acts like a ticket for the postal service. Once it's mailed, the postal workers handle the delivery, making sure your item reaches its destination safely and on time.