Replying to and forwarding archived items

You can reply to or forward an archived item from its shortcut, or from your Virtual Vault. Outlook opens the item in its original form, exactly as it does when you reply to or forward any other item.

To reply to or forward an archived item

Select the shortcut to the item, or select the item in your Virtual Vault.

Note that you can forward multiple archived and non-archived items at once.
Use any of the normal Outlook actions to reply to or forward the items.