All authentication to our sites are based on oAuth with Geocaching.com. Passwords aren't sent to our websites and therefore not stored there either.
We do store email addresses together with your Geocaching alias. We will not share these email addresses with anyone else unless required by our license agreement with Groundspeak Inc. Neither will we send any emails to it that you do not sign up for, with the exception of information related to your orders placed in this web-shop.