Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
I had been experiencing the same issue with my S8 for the past three months, following the same workarounds/fixes discussed on this thread as far back as 2015! Many of us have been frustrated for years. I saw a post indentifying the battery optimization setting in the authenticator app as the root cause. I went to settings on my phone and used voice search to locate the app and in my case, as soon I opened it I saw a red notice on settings. Which confirmed the app was set in battery optimization mode and when I turned it off both the notifications and my emails came in as expected. I will monitor and post an update here in one week to let you know if the fix held. I'm also going to copy and paste this on that first thread where I found this suggestion.... YOU ARE MY HERO!