To open an individual email for reading, do the following while in the Email application:
From the Browse Email screen, make sure the folder in which you've stored the email is shown in expanded view. (Scroll to highlight the folder name, then press the D-PAD or roll the TRACKBALL right/left to expand/collapse the emails contained in the folder.)
Scroll to highlight the message you want to read, then press the TRACKBALL to open it. Your email contents display in the screen.
To read the next or previous message in the list, press MENU and select Navigate > Next or Previous [MENU + / ].
To dismiss the email and return to the Browse Email screen, press DONE .