Organizing and accessing contact information in Outlook.com
Most email programs have a method to view the header in plaintext. In Outook, you can go to File >> Properties and look at the content of the internet header. LOTS of good info for making rules. Select it all, save it in a plaintext editor like Notepad then search for these clues:
spf=
mailfrom= (if it says dkim=none, then you need to check for empty senders (tricky) see lots of how-to on that one.)
from:
subject:
Please do not copy and paste the mail. It shows up as garbage characters (system trying to find characters matching bytes of code).