express mail

mail that is transported and delivered quickly

In most postal systems Express mail refers to an accelerated delivery service for which the customer pays a surcharge and receives faster delivery. Express mail is a service for domestic mail and is governed by a country's own Postal authority. Since 1998 the international accelerated delivery services are governed by the EMS Cooperative.
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Noun
1. mail that is distributed by a rapid and efficient system
(synonym) express
(hypernym) mail
(hyponym) pony express

Verb
1. send by express mail or courier such as Federal Express; "Express-mail the documents immediately"
(hypernym) mail, post, send