Speed post services are faster than courier facility services. In local delivery service, speed post services deliver your package at the rate of 98% speed, whereas Courier delivers at 93% speed. However, there is a difference between post and Courier. Postal services are usually used for the delivery of letters and documents. In contrast, couriers can deliver heavy material and is an all-inclusive delivery method with a vast range. Speed post can be suitable for parcel delivery, but the Courier is the better option for more extensive packages.