I like this feature but every App uses his own folder for saving the attachments.
Outlook 2016 ProPlus (1703 Build 7967.2082): root of the users OFB
Outlook Web App (German): OFB\E-Mail Anlagen
Outlook IOS: OFB\Outlook
I think there will be a way to share the informationen between the development teams to use one folder for all Outlook Apps, for example "Outlook". So we don't need to explain users why Outlook needs three places for that feature.