Win 10 Watching E-mails Or Not??

Okay< as You will be able to tell, I have Never done this before and I have a question. My win 7 melted several months ago and I have been fighting with Win 10 since. Been coming to your site for help a lot!! In the last two weeks, I have had 5 e-mails sent back. More than I got in the last ten years. Most of them were to my Brother and the last one was about the Start menu 8 button! I tried sending that message on Thunderbird and than the same one of our internet web-mail. Is something going on here?? Is Win 10 watching my E-mails and somehow on to my Internet Provider??? At 71, the thought I have a system that is checking my e-mail is bugging me? Is this just me or have you others hear do this and I am just behind the times?? I find WIN 10 to be a PAIN, I like to do things my way, not theirs!! Now I have to pay attention to my e-mail too?? Figured you guys would Know!!! Thanks!!

 

Win 10 plays no part at all in your emails, either sending or receiving. Emails are either handled by your browser or by an email client such as Thunderbird. The operating system doesn't get involved at all. If you have emails failing with an undeliverable message there is an error in the address or the addressee is blocking you.

'fraid so

 

also, you can check the header of the email to see where it went.