Email or SMS Notification for Mailbox Sensor

I only have a mailbox sensor and a bridge. I was hoping there would be a way to get an email or text sent to me about motion in my mailbox. Living out in the country means mail gets stolen often.

Same problem here. I get the Event showing in the Ring App but no notifications on either email or text message. VERY frustrating. How many hours more do I need to mess with this before I can get it to work? I’d return it but it’s a gift and already installed in my mailbox. VERY VERY POOR instructions! Oh, and can you please explain step by step how to do this? I have no other Ring devices and do not understand the nomenclature. Thank you.