Wider Outlook Portfolio Creation Tools
The current Adobe plugin for Outlook 2016 works very well when creating portfolios from a group of emails. I'm able to add as many emails as I want to a single portfolio and the ability to append them when more emails come in is excellent. But these portfolios can only be added to from Outlook. It is important that I am able to add files to these Outlook portfolios without having to email them to myself first.
Thanks for your request. But this is as designed behavior because non-email PDF files won’t have fields like To:, From:, etc. which will create inconsistency in the PDF Portfolio.
So the workaround would be to email those files and convert/append to portfolios.