Email from iPad

If you are on iOS 5 then in thumbnail view in the Photos app you should be able to select up to 5 photos and attach them to an email

If you are on iOS 6 then in the email itself you can press and hold the body of the email, and after a second or so when the magnifying symbol appears release the screen and you should get a pop-up with a seriew of options, one of which is 'Insert Photo or Video' - you can repeat that for the extra photos that you want to attach (I'm not sure if there is a 5 photo limit)