for iOS 3.1 software

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.
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Chapter 4 Mail