Odds are a lot of them are...
Any email that contains the line "click to see images" or something to that effect when you receive an email from You tube concerning a new video uploaded by a channel you subscribe to......or.... from your car dealer....or news source you are subscribed to.....
You are most definitely being tracked
More: https://nakedsecurity.sophos.com/20...ed-to-track-your-location-and-how-to-stop-it/
A simpler way to find out in GMail
How could I detect if an email I received is being tracked by the sender? - Quora
Any email that contains the line "click to see images" or something to that effect when you receive an email from You tube concerning a new video uploaded by a channel you subscribe to......or.... from your car dealer....or news source you are subscribed to.....
You are most definitely being tracked
More: https://nakedsecurity.sophos.com/20...ed-to-track-your-location-and-how-to-stop-it/
A simpler way to find out in GMail
How could I detect if an email I received is being tracked by the sender? - Quora