Postcard AI by PostedBy.ai is a tool that allows users to easily create and send personalized postcards to anyone in the world using advanced AI technology. The tool generates a unique image based on user inputted text and allows users to customize a message and recipient address. Postcards are delivered straight to the recipient’s doorstep via a global mail network. The tool also offers the ability to upload photos to generate even more unique postcards. Prices are not mentioned in the given extract.