We also use the information to estimate the size of our audience and measure certain traffic patterns, to track the progress and number of entries in our promotions and contests, to track visits to and business conducted at our online store, to notify our visitors about updates to our website and system statuses.</li> </ol> </li> <li> E-mailing and newsletter <ol> <li>Astrill will only send you e-mails that are absolutely crucial for proper functioning of our services. When you sign up, we will send you an e-mail to confirm your e-mail address.