There are two ways to opt out of the summary report emails:
1) Unsubscribe: Click the Unsubscribe link on the bottom of the email & confirm unsubscribe. You do not need to log in to complete this process.
2) Edit Subscription: Click Edit subscription link at the bottom of the email or load HQ & navigate to reports. Select Subscription from the report type selector at the top of the page. Toggle off all email frequencies you do not want to receive. You will need to log in to access this page.