To avoid deleting a message accidentally, you can turn the Delete Confirmation preference on (see Set email preferences). If you do accidentally delete a message, you can move it back to the original folder (see Move a message to another folder). To remove a message from your smartphone permanently, delete it from the deleted items folder. To delete all messages from the deleted items folder, open the application menu while in the folder, tap Empty Trash, and then tap Empty Trash again.
TIP If you change the folder where you store deleted messages for an IMAP account (see Enter advanced account settings), deleting messages from the folder removes them from your smartphone.
Add a signature to outgoing messages
A signature includes information you want to add to the closing of all your outgoing
1Open Email 
.
2Open the application menu and tap Preferences & Accounts.
3Tap the account you want.
4Tap the Signature field and enter the signature text. To format the text with bold, italics, or color, select the text (see Text selection gestures), open the application menu, and tap Edit > [the option you want].
View mail folders
1Open Email 
.
2Tap 
to the right of an account name.
3Tap the folder name you want to open.
4(Optional) Tap the folder header to view information such as last sync and number of messages.
96 Chapter 7 : Email, text, multimedia, and instant messaging