Email headers contain tracking information for an individual email, detailing the path a message took as it went through various mail servers. The headers contain time-stamps, IP addresses and sender/recipient information. Providing this information to Technology Help staff will help them troubleshoot and resolve issues with emails, such as emails not sending, bouncing incorrectly, or being marked as spam when they should not be.
Viewing Email Headers
Sign into your email in a web browser.
Open the email you want to check the headers for.
Next to Reply , click More, the three vertical stacking dots .
Click Show original. A page with the email headers will open in a new tab or window.