Moving Email Messages Between Accounts on iOS 4

I only noticed this in iOS 4 but it might have been there before.

There is a back button labelled ‘Accounts’ when in the move message mode in Mail. This allows moving messages to mailboxes on other accounts. This strikes me as a very advanced feature for a pocket sized device.

On another note, I think the explanatory text shown at the top is poorly worded. It reads “Move this message to a new mailbox.” This states a new mailbox, but the feature moves messages to other existing mailboxes, which I would not consider to be new.