Tired of digging around for the file you want to attach when you were just working on it earlier? Tired of later trying to sift through emails to find links shared with you? With the Windows release of Outlook 2016, attachments just got a whole lot better. You can now skip the hassles associated with finding and sharing files, regardless of whether you were working on them on your computer, phone or tablet.
The next time you go to attach a file to your email, the first thing you’ll notice is a list of recently accessed documents under the Recent Items. The Recent Items list is comprised of documents on your local hard drive as well as OneDrive, OneDrive for Business and SharePoint—making it simple to pick files you have accessed across any of your devices.
Read more at source: https://blogs.office.com/2015/11/09/attachments-in-outlook-2016-ready-for-collaboration/