Google Account settings

From the Home screen, tap Apps > Gmail .

Tap the Menu Key > Settings > General settings.

Confirm before deleting: Mark the checkbox to ask to confirm before deleting a message.

Confirm before archiving: Mark the checkbox to ask to confirm before archiving a message.

Confirm before sending: Mark the checkbox to ask to confirm before sending a message.

Reply all: Mark the checkbox to make Reply all the default message action.

Auto-advance: Opens a dialog box to set which conversation list is viewed next.

Message text size: Opens a dialog box to set your message text size.

Hide checkboxes: Mark the checkbox to hide checkboxes so that tap and hold will select an item.

Message actions: Opens a dialog box to set when to show message actions.

Clear search history: Tap to clear your search history.

Hide pictures in messages: Pictures will not be displayed automatically until you allow by sender.