Apple iPod touch iOS 3.1 - Manual (Page 72)

Delete multiple messages: When viewing a list of messages, tap Edit, select the
messages you want to delete, then tap Delete.
Move a message to another mailbox or folder: When viewing a message, tap ,
then choose a mailbox or folder.
Move multiple messages: When viewing a list of messages, tap Edit, select the
messages you want to move, then tap Move and select a mailbox or folder.
72 Chapter 6 Mail