You can check if the courier is legit or not by verifying company registration, checking online reviews, referring to Industry membership associations and checking the social media presence of the respective company. In this article, we have listed all the possible scams and the ways you can avoid them.

UN delivery company messengers specialize in urgent, on-demand package and freight delivery, with a 99% on-time track record. With a fleet of 200 full-time uniformed couriers, we handle over 2,000 thousand deliveries a day for hundreds of area businesses, including nine of the area's 10 largest law firms.

Bureau of Diplomatic Security. A diplomatic courier is a U.S. government official who is trained and credentialed by the Secretary of State to accompany classified materials across international borders.

The first clue is the "diplomatic courier". There is not such thing as a "diplomatic courier". It is a fictional thing invented by scammers.