Hi,
The emails were random, password requests for various things - Netflix, email etc. One of them I caught was detailed as from a Google Pixel2 Located in Bristol.
The main set of 5 disappearing emails were all from Netflix - email change request, update confirmation etc.
BUT, these all then just disappeared from the email list as though they'd been recalled, moved or deleted.
I did check with Netflix and sure enough my details had been changed - my email address/phone number had been removed, and Name. I did ask what they had been changed to, but they said just random letters and numbers
I checked online on webmail and on my email client for any filters but there were none.