Disappearing email from Inbox
Over the last few weeks email in my Inbox section have vanished as soon as I leave Mail. I have not changed any "rules" and I have not accidentally deleted my mail. This is a real nuisance as I often leave email that need an answer in for a few days before replying. I can no longer do so. I have Googled for help and see that countess others complain about this problem but I can find no solution. Can anyone here any offer any help, please?
My thanks in advance.
Software: Big Sur
Mail: Version 14.0 (3654.120.0.1.15)
iMac 27″, macOS 11.7