I asked a question about how to set up email notifications for access requests. It turns out that I do have that set up correctly. I am an owner of a site on SharePoint online.
However, I don't seem to be getting any emails from that notification. The email address that receives the notifications is working: I tested the email address by sending email to it from both internal and external email addresses and it's receiving email just fine.
Is there any way to "debug" whether the notification emails are sent? Some kind of log somewhere of the emails that are sent? Any other ideas why I might not be getting the emails?