On occasions, I see in small red type a date - time message. This appears next to the account name, and vanishes when email is refreshed. It is often seen when my tablet has been with me when I left the house, and then I return home or reach a WiFi point.
Today at about 11:00 I woke my tablet and it said something like:
"!Today 09:00".
As it happens, my router had lost connection with internet servers probably about that time.
I can guess that the message EITHER shows that a refresh failed at that time and all have failed since OR the last time a refresh succeeded and all have failed since OR something else.
Is there a clear definition of what these messages mean. I am using IMAP with push.