A common request is a way to redirect messages, so that when a message is forwarded, the recipient can reply directly to the original sender. Outlook doesn't support a true redirect and while add-ins exist that do redirects, it takes just a step or two for anyone to "redirect" a message.
Method 1 (non-Exchange accounts): Open the message and choose Actions, Resend. You may receive a warning that you aren't the original sender, Ok it and Send. Note that if your ISP matches email addresses, this method may fail for non-Exchange accounts.
Method 2 (all account types): Forward as attachment. Recipient opens attachment and can reply from attachment. If your default Forward format is message inline, select two messages, hit Forward then delete one.
This method is nice as it allows you to add comments without editing the original messages. Recipient can drag attachment from forwarded message and drop it in their Inbox.
Published March 29, 2004. Last updated on June 26, 2013.