If so, the header can often shed some light on this issue. The header is basically a tracking record of the route the email you sent took and the stops it made along the way to get to the customer’s inbox.

Just like sending something across the country by post emails also need to stop off at various points, the headers show you this exact route and reveal these stops. They also show the details of the sender and the recipients. Headers also reveal more about the different ISP’s through the information they chose to include

Every email landing in an inbox is given a header. So why haven’t you seen one? This is more than likely because each email client (that’s the service or program you use to read you emails – like Outlook, Hotmail, Googlemail etc) hides these headers in a different way. They are hidden from view because unless you’re an email marketer trying to find out more about your email deliverability, the header is not that interesting to see.

For more information on how to see headers on different email platforms go to:

http://www.abika.com/Reports/Samples/emailheaderguide.htm