A commercial organisation asked me to investigate a series of suspicious emails they had received. I will not divulge the details of the case, but can reveal the processes involved.

Every email received contains email headers, containing information about the sender and the route from sender to receiver. The steps to view an email header vary between mail clients. Email headers should be read from the bottom up, for that is the order in which they pass through the mail system to their ultimate destination.

The email in question was from a Gmail client and had been cloaked. This raised two complications for us.