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.
Certified Mail first got its start in 1955, and today it is used as a record of mailing for a wide variety of purposes. Mainly, by anyone who wants a proof of mailing primarily by way of a tracking number and that is also used for online tracking.