Hello,
I was trying to see the behaviour of Drag and Drop a file from Elements Organizer over versions 13, 2018 and 2019 with Outlook.
As you mentioned, you were able to Drag-Drop a media to Outlook and it would copy the media. This behavior is observed with Elements Organizer 13.
Digging into it, I found that earlier(in Organizer 13), Copy and Paste operation was performed whenever we Drag and Drop a media but this media was not linked.
Also I found a user requesting this feature, so that Drag and Drop would create a link for that media, when opened in Outlook.
Link: Photoshop Elements: Drag and drop between PSE and other applications doesn't allow linking | Photoshop Family Customer C…
It depends on the application in which drag/drop operation is performed, For Eg: if you drag/drop to any other Photo Editor. It will copy the media for all the versions of Elements Organizer.
For Outlook, you could use the traditional copy paste(Ctrl+c and Ctrl+v) for your requirement.
Hope this helps.
Thanks
Prakash