How on earth do you have over a thousand unread emails?!?! You need to make use of filters Why not just log in on a browser and mark all read?
Ah yes, this worked thanks. Not sure why I didn't think of it...
Arr! Wallpaper please, thx
http://st.gdefon.com/wallpapers_original/wallpapers/1626_(www.GdeFon.com).jpg