I access other emails using OWA since I cannot add this account to my Outlook Exchange 2013.
When I try to paste images to email, it will not allow me to do so. I use the snipping tool to capture part of excel or word then try to paste it into the body of the email and it does not copy. When I was using Windows 7, S/mime was an option that I could see under options with OWA and by downloading s/mime I was able to paste images into email.
Now this option is no longer available