Interesting to not have seen PostMark mentioned

Hey mate, hopefully this lets me post a link: https://www.lifewire.com/all-mail-folder-outlook-1173767

But I just googled “All Mail Search Folder in Outlook”

I believe I understand what you’re trying to do.

You’ll need to use an “All Mail” search folder (google this if unfamiliar). Then you’ll need to setup a custom view with the columns to and from (I believe you may need a custom field to get all the data you desire but cannot recall what one). Then it’s as simple as highlighting all in that “search folder” and dragging the highlighted files into a blank excel sheet.

From there you can clean up the output, remove duplicates etc and enjoy.