The invention is concerned with a device for clamping and releasing work tools in a tool receptacle. The phenolic fraction is rich in dihydrochalcones and may be used as a cosmetic, dietary, or nutraceutical preparation. If the accommodating capability in the reception terminal is not matched to the attached file, the file is converted in keeping with the accommodating capability of the reception terminal, and the E-mail is sent with the so-converted file attached to it.