[kern417]

I'm honestly not sure what that does. I don't have any of the preview boxes checked but if i select the icon when using s2u2 it shows me a preview of the last email/sms that i received. not sure if that's what you're looking for, but there is a readme at the s2u2 website that might explain more what the different settings do. honestly s2u2 has never drained my battery so it's hard for me to give an opinion in that aspect.