Share Apple Photos to Outlook as attachments
I am running OS Mojave. Ideally, when in Photos, I would like to Share multiple photos directly to Outlook Mail. When I go to the Share menu in Extensions, I see Outlook Mail (or at least what looks like Outlook mail. It's checkbox is marked but greyed out. Is there no way to share (send) selected photos to Outlook so that I can email them?
iMac 21.5" 4K, macOS 10.14