To disable the ChangeAlert emails, do the following:
1. Login to your CodeGuard dashboard and select the 'Settings' tab for the website you would like to modify.
2. Under the 'Email Notifications' section, select 'No, do not send me email notifiers.'
3. Click the 'Update Settings' button within the 'Email Notifications' section.
For more information about changing your website's settings, please take a look at this tutorial video.