email header - From:

It appears outlook ignores the 'from' header and displays data it derives from other email headers, e.g. sender.   Is there a document describing this design decision?   This behavior is very apparent with email received from mail lists.   Specifically, the Open Source mail list software, Sympa; this software stack allows a list owner to change the 'from' email address to reflect a number of user friendly options and Outlook simply ignores the 'from' field.  The available options include: 

1. “Name” (display_name)
2. “Name” (e-mail)  (name_and_email)
3. “Name” (via List) (name_via_list)
4. “Name” (e-mail via List) (name_email_via_list)
5. “List” (on behalf of e-mail) (list_for_email)
6. “List” (on behalf of Name) (list_for_name)

I've been testing the 'from' behaviors on Office 2019, O365, Gmail and Yahoo mail.  The Microsoft email clients also behave differently while the Gmail/Yahoo clients conform and display to the appropriate 'from' header.   I've created a spreadsheet showing what the various email clients display in the 'from' field based on the above rewrite options.

So - two questions/issues

1)  A description on how Outlook derives the 'from' field.

2)  Is there a way to over-ride this behavior and just display the 'from' field as other email clients do?

Thank you,

Terry McLaren