Back to email trace guideAOL mail
AOL Desktop software does not show headers, so you need to connect to email through WWW.AOL.COM via any browser. The View Message Source from context menu allows seeing headers.
You need right-click the message in the message list
then click View Message Source
AOL open new window to show headers
Back to email trace guideYahoo Mail
On Yahoo Mail you need to click "View Full header" from menu "More actions..." while you see message.