Dennis
I have an Acrobat DC Pro subscription and I am extremely disappointed that I am unable to permanently turn off the automatic upload of PDF files to Adobe Cloud storage when I attempt to attach PDF files to an Outlook email. I completely understand how to disable the plugin in Outlook that does this but every time that Acrobat Pro updates it re-enables the plugin and I'm back to square one having to delete the plugin again. I already have a subscription to MS OneDrive and have zero need for a second cloud service. I also don't want my PDFs being loaded to yet another cloud service that I have no interest in. You guys need to be provide a feature that permanently turns this feature off. At the present time, I've disable automatic updates to Acrobat DC Pro and deleted the Outlook plugin but this is a workaround and not a permanent fix.
BTW, given all the chat room discussions on this topic, I know I'm not the only one here that is frustrated with this.