Another new feature introduced for the anonymous user who receive access denied error message in SharePoint Environment. Now they can send email to request for access. Pretty nice Isn't?
This setting determines who will receive an email when a user requests access to a particular site.
Steps
1. Navigate to Site Settings.
2. Click Site Permissions under Site Settings.
3. Go to the ribbon tab and click on Access Request Settings
4. Configure the email address as mentioned
Attached is the screenshot for configuration help.
Happy Share Pointing :-)