My email is beeing monitored by gmail domain?!

Please provide us with the following information


Type of device (iPad pro, iPhone 10, etc):
Macbook Air 10, 1 - iphone Xs

iOS version ( Settings --> About --> Software Version ):
Macbook, MacOS 14.0, serial no C17GQ4JXQ6L4,
Iphone, 16.6

Detailed description of the behavior:
When I send and email from my icloud domain to my yahoo domain, then my device shows a copy of my email conversation in a 3rd email box where I haven’t sent my email?!
Google is clearly at some occassions “listening” to my email traffic from another gmail adress which I have.
At first glance I believed that this was issued by my google apps installed in my iphone device, but I proved the other the day that it isn’t related to google prooducts because my macbook is “clean” from google crap.


THIS PICTURE SHOWS AN EMAIL SENT ON MY MACBOOK DEVICE…


THIS PICTURE SHOWS AN EMAIL SENT ON MY IPHONE DEVICE…

Please let me know if you need any other information, that you are missing to understand the security breach …

It’s more about automated processes than direct monitoring.

This is NOT an answer …please explain what you mean by automated generation.

Obvious: of course it’s automatically generated!?
Sequence: I have NOT provided this process, and I have not approved monitoring by google (not with my consent anyway)