The reusable card, such as a greeting card or postcard, and envelope include a front leaf and rear leaf and may be hinged together. An insert is removably placed within a slot in the front leaf and viewed through a window in the front leaf for viewing both sides of the insert. The rear leaf includes a modifiable message on a customizable greetings space, such as handwriting which can be removably placed. A scannable tag can be scanned by a smartphone to access a data storage location through the internet where customizable video and audio greetings can be provided for viewing by a recipient of the greeting card and re-recording when the greeting card is to be reused. The envelope has spaces thereon where address and return labels and postage can be removably placed. The envelope also includes a resealable closure allowing the interior of the envelope to be closed and reopened multiple times.