Sort Messages in the Email App
When you're reading e-mail in the Email app, by default the app sorts messages by the most recent message at the top of the message list down to the oldest message at the bottom of the list. You can change the sort order by tapping the Menu icon, which appears at the right side of the menu bar at the top of the screen, and then tapping Sort By in the menu.
In the Sort By window shown in Figure 4, tap the button to the right of the sort order, such as viewing messages with file attachments at the top of the list.
Figure 4 Tap the button to the right of the sort method you want to use.
After you tap the button, you see your messages reordered in the message list. You can reorder the list by opening the Sort By window again and selecting a new sort order.