i got a popup about my opinion on the conversation viewer setting (whether or not i liked it) when i tried to check my email. there was no option to close the popup, just yes or no, and the rest of the screen was greyed out. i reloaded to get rid of it because i do not have an opinion on a feature i never use (i only receive spam/promo emails). very rude that there was no option to just close the window.