the invention provides packaging and mailable apparatus suitable for a variety of uses , such as in the postal system for the purpose of mailing , mass mailing , or self - mailing of optical discs or other optical and non - optical cards , displaying such discs or cards at point of purchase locations , and / or carrying them in one &# 39 ; s wallet or pocket . such packaging comprises mailcards , such as standard postcards or greeting cards ; card - sized gift packaging ; or protective packaging of various sizes , which such packages house optical discs or cards that may or may not be visible through the packaging .