psyop-military actions designed to influence the perceptions and attitudes of individuals, groups, and foreign governments.
Choose certified mail when you need proof of delivery and time is of the essence. Registered mail is the Postal Service's most secure form of mail delivery, involving an unbroken chain of custody. Registered mail is protected in sealed containers, safes and cages, and held under lock and key.
Best Answer: Registered Mail thru the Postal Service is the safest way. It will cost more money than certified mail. Registered mail has to be signed for by every person that has possession of your letter, from the time you mail it until the time that it is signed for by the recipient. That means every postal clerk, truck driver, and letter carrier is responsible for it.