Learn how and why you should set up Google Postmaster Tools.
mail.domain.com (subdomain) vs domain.com (root domain)
mailmonitor@onesignal.com
as a “managed user”.Click "Managed Users"
Add mailmonitor@onesignal.com as a managed user
Gmail Spam Rate
Very High Gmail Spam Rate!
Why does this show 0% for my domain?
Screenshot of the Authentication Dashboard details from Google Postmaster for reference.