uikit overview and send email

http://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/CocoaFundamentals/Art/uikit_classes.jpg

detect touch event on imageview
http://stackoverflow.com/questions/855095/how-can-i-detect-the-touch-event-of-an-uiimageview

openurl to send email from APP

http://www.icodeblog.com/2009/02/20/iphone-programming-tutorial-using-openurl-to-send-email-from-your-app/

with attachement
http://howtomakeiphoneapps.com/2009/07/how-to-make-your-iphone-app-send-email-with-attachments/