We'd like to make it easier for folks to view content on any page and easily share it to other sites or email, etc. Is there an OOTB widget or toggle somewhere that would enable this?
Or is the best way to accomplish this using something like Sumo which allows you to simply drop a JS snippet in the footer, and have the social icons appear for sharing.
All in all you're on the right track with your thoughts on Sumo.
The one I built for Dynamics is integrated into a custom "LInks" widget... for example, "Forum - links" It renders a grey bar with a dropdown..https://community.dynamics.com/gp/f/32/t/221100