"Unless you have objected, we will use your email address that we have received in connection with the sale of a good or service to send you electronic advertisements for our own goods or services that are similar to those you have already purchased from us. You may object to this use of your e-mail address at any time by notifying us. The contact details for exercising the objection can be found in the imprint. You can also use the link provided for this purpose in the advertising e-mail. This will not incur any costs other than the transmission costs according to the prime rates."