How to Access an Email Message Source in Outlook.com

Reading the source headers of an email message in your Outlook.com inbox offers tons of info about who sent it and how it got into your inbox.

How to See Full Email Headers in Outlook.com

How To Read Email Headers (And Understand Them!) - MailerCheck

See the whole 'raw' email message in Outlook - Office Watch

How do I view source in Outlook 2010? - Super User

Create and send email in Outlook - Microsoft Support

View Source for emails in Outlook for Mac

How to view the source of a message in Outlook 2010 and 2013

How to filter Outlook emails on all your devices

How to view source code of html email body in Outlook?