Speedy Delivery Option is a term used to describe the AIRMAIL service, which is a 7-letter postal service that allows for fast delivery of packages and letters. AIRMAIL is a reliable and cost-effective way to send items quickly, as it is usually faster than regular mail services. It is also a secure way to send items, as it is tracked and monitored throughout its journey. AIRMAIL is an ideal choice for those who need their items delivered quickly and securely.