DHL does not charge an extra delivery service charge. Although in some cases, DHL’s end-to-end time is shorter, skyostal offers similar shipping times to reduce costs and help you strike the right balance between cost savings and transport duration.
For large parcels, many factors need to be considered when choosing to mail. This paper mainly describes how to mail large parcels, discusses the cheapest and most affordable way to transport large parcels, and on this basis, finds the cheapest way for postal ponies to deliver large luggage.
The U.S. Postal Service also distributes parcels and mail on Sundays, but not all of them. Currently, USPS offers only a few Amazon packages and priority mail express on Sundays.