Email client from which the message was sent.It will help you avoid entering Good morning when it is late night on the recipient's side.
It looks exactly like all emails you usually get from your bank, still you have doubts… You open the message headers just to see instead of the sender's server :). For example, you received an unexpected email from. The truth is that it contains a lot of information for you to retrieve.
Microsoft hid one really handy and essential feature - the possibility to view message headers.