I can't believe this is not available in the new version. I thought this was a joke and I was just missing some settings. Then I did a Google search and found over 100 angry replies from people. This is crazy; this was such a streamlined, basic feature from the old Outlook. If you have 10 email accounts from different points in your business, like an info, support, feedback, and other email accounts, and you want to do a simple search for a message you saw from a customer, you can't do this anymore. You have to go through mailbox by mailbox, duplicating the amount of work and time it takes. I honestly, at this point, don't know why anyone would ever be using the new Outlook. There are so many missing features; I think it's about four years of development behind. This reminds me of when Microsoft bought Skype and completely destroyed it. Everyone I knew who was using Skype before had to stop using it, and then five years later, all of the features of the old version are back, but now all the users are gone. I actually feel embarrassed to use Skype if I log back in. This is exactly what they're doing with Outlook, but I think they learned a little bit about what happened after they desecrated Skype, so they're leaving the old Outlook functional for another few years.