If you have not objected to this, we will use the email address that we have acquired from you during a former sale of a product or service to email you advertisements for our own products and services that are similar to those you have already purchased from us. You can object to this use of your email address at any time by contacting us. Please find the contact data for the withdrawal in the legal notice. You can also use the link that is intended for this purpose in the advertisement email itself. For this, no further costs arise than the transmission costs according to the base tariffs.