In the context of registration and setting up a user account, we collect and save the following personal data, but do not pass them on to third parties: the user's email address, password, information on the devices that have been used to access this account (device fingerprint, operating system, browser and browser version), IP addresses of the last 10 login attempts (the IP addresses of earlier attempts are deleted), the optional individualized text (shown in the subject line of your email for security), and possible status information on your email inbox if messages bounce back from your email provider.