The most essential mail supply items include envelopes, poly covers and cardboard boxes. These items make it easy to send items via mail. Address labels are another important mail supply item, to indicate the recipient address, sender’s address, and other important information such as if the item is fragile. For commercial and industrial shipments, heat guns to seal the package, edge protectors to make sure the items do not become damaged in transit, and an additional layer of cling film to protect the package are important. Hand trunk and trolleys, and weighing scales are essential if dealing with bulk mailing regularly.