Special Delivery Definition

noun

A postal service through which, for an extra fee, mail is delivered by a special messenger.

Webster's New World

(countable) A particular posted letter or package which is delivered in this manner; a particular act of conveying such letters or packages to one or more recipients.

Wiktionary

(countable and uncountable, idiomatic, by extension, sometimes humorous) Something"”whether desirable or undesirable"”which is intentionally given to a specific individual or which an individual receives rapidly and unexpectedly; the personalized, direct quality of the transmission of such an item.

Wiktionary