From time to time, BookBildr runs a storage check and, to keep the website efficient for all users, we identify users who haven’t been active for more than 6 months. We then send an email to these users warning them that unless they want to keep their content, we are going to remove it to free up storage space. We ask them to either fill in a form or reply to our email. If we don’t hear back, we put their books in a “deleted” folder, which we keep for one month in case anyone wants to restore their books. But once the month ends, the inactive content is deleted forever.