Abstract: The present utility model relates to a mailbox with an integrated QR code and applies to letterboxes, complaint and suggestion boxes, mail systems, complaint and suggestion systems, and continuous improvement systems The combination of two elements, a traditional mailbox and a QR code, creates a new generation of mailboxes that, while not capable of receiving physical paper, enable people to link to digital platforms by creating specific communication links and to use the options provided by technology and mobile devices to effectively and efficiently process data in real time. This takes place when the QR code is read with a mobile device, enabling access to a digital platform linked to the mailbox and on which it is possible to send messages, comments, complaints and suggestions, as well as attach files, audio files, videos, photographs, or any other multimedia element. At the same time, the emotional closeness evoked by traditional mailboxes is maintained.