It includes information on how to then view the complete source of specific emails as they arrive.

When you select a message, Outlook collects the pieces to show just what is needed.

Except when you want Outlook todisplay the headers.

regedit in Search box in Windows 10

By default, Outlook removes certain header lines.

Here’s how to configure Outlook to preserve the complete source of email messages.

In theValue datatext box, enter1, then pressOK.

Registry Editor

If Outlook is open, close and then re-open it.

Outlook stores the message source and the message content.

This means that future emails will take more space.

Edit > New in Registry Editor

BecausePST files (where Outlook stores mail) have a size limit, regularly delete orarchive email in Outlook.

To retrieve the source of newly retrievedPOP messages

kick off the desired message in a separate window.

Go to theFiletab and selectInfo.

SaveAllMIMENotJustHeaders

To find the source of the email, look in theInternet headerssection.

SelectClosewhen you’re finished.

Value dialog

Vale Data

Info tab on message File window

message properties