Saved drafts missing

I am using Adobe Acrobat Pro DC and when I use the Send Email (Share/Send as Attachment/ Use Default Email Application), it spawns a session window of Outlook with the PDF file attached. I type in the email body as well as indicate who the recipients should be.

I decide that I need to save the email so that I can finish it later. but after clicking on the "save" icon, I don't know where my draft email has been saved. When I go into Outlook, the email has not been saved in the drafts folder.

Bug? User error?

Thanks,

Ray Theberge