Envelope stuffing refers to the process of filling an envelope with documents, letters, or other items for the purpose of mailing or delivery. This task typically involves carefully folding and inserting the contents into the envelope, sealing it, and addressing it to the intended recipient. Envelope stuffing can be done manually or with the help of specialized machines, and is often used for mass mailings, such as marketing materials or important correspondence. It requires attention to detail and precision to ensure that all items are properly inserted and the envelope is securely sealed. Envelope stuffing is a common practice in offices, businesses, and even personal correspondence, and is an essential step in the process of sending physical mail.