This tutorial covers controlling what OnsiteIQ emails you about.
Steps
Click the gear icon at the bottom of the left sidebar to open Settings.
Under General, click Notifications.
Switch New walkthrough updates on or off.
There is no save button. Changes are saved automatically as soon as you flip the toggle.
What "New walkthrough updates" covers
This is the notification telling you that a new site walk has been captured and processed for a project you have access to. Turning it off stops those emails; it does not affect your access to the walkthroughs themselves, which are always available in the platform.
Your preference applies to your own account. It does not change what anyone else on the project receives.