By email
The form on this page ends up at this address. Write to it directly if you'd rather.
Write to us
Use the form or send an email, in English or German. Either way your message goes straight to a person.
Security reports
Found a way to read, change or break something you shouldn't be able to? Write to this address, not the form, and give us a chance to fix it before you publish.
Press and logos
The logo, the app icons and how to write the name are on the brand page.