Originally Posted by
mozilla
No, there will be additional headers that will provide technical information and exact times of transmission between servers, but they are almost always hidden from the default view. Usually, there's an option to reveal them. In my email client, I need to open the email, then go to a drop-down menu where there is an option "Show Raw Message" and then it will show all the headers.
Well outside my area of core competency but if you knew how to do that in Gmail I would be happy to have a go at it.