To disable the ChangeAlert emails, do the following:
1. Log into 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.
Please note that if you need to make changes to this setting for multiple sites on your account, you can update them all from your account settings as well.
For more information about changing your website's settings, please take a look at this tutorial video.