Abstract: A postcard with sound recording and a player therefor allows discrete, even multiple sending of a content and listening to the content via an adequate player and a security pin. The postcard of the invention is made as an optional postcard (1), one side of which is optionally graphically designed, for instance bearing a photo, and on the other side there is a field for an address and a message field, where an electronic device (2) is placed, which is intended to receive, store and transmit a voice message and consists of a microphone, a processing unit, a memory unit and a power source, e.g.