The only way you can view stored items on your email via your ipad is by using safari and accessing your hotmail account.
The only way I know how to delete photo is via the 'Bin' icon that appears when you tap screen. Another way maybe delete it frm your iTunes.
A lot of items on the ipad are deleted by swiping the screen and a 'Delete' box appears. Say you want to delete a song from your Music. You find the song and just swipe a a red box appears with delete.
Not much help sorry.