certain information or offers to you. Maintaining customer relationships may also require us or a commissioned service provider to use this data to inform you about product offers or to conduct online surveys [...] you have subscribed to our newsletter and have given your consent for us to send you interesting offers and information from Eschenbach Optik GmbH on a regular basis, you have given us express permission [...] You will then be sent newsletters and information on the following themes: advertising, current offers, information on seminars, collection training and meetings via online tools. We only require an e-mail