sharing photos via email
When I click on the share button, Mail does not come up as an option. If I click on "More," I can see that I checked off Mail, but only Photos is highlighted, and I can't click on Mail. I've spent a lot of time on this and have not come up with a solution. So I have to drag the photos to the desktop, and then attach to emails, which is very cumbersome and slow. Appreciate any help with this.
iMac 27", macOS 10.14