Seems like this should be fairly simple, but I can't find a simple solution.
Is it possible to highlight the content of emails received in Outlook 2010 without creating an entirely new message?
Step 1 - Open the received message.
Step 2 - Click Actions / Edit Message on the Ribbon, Message tab
Step 3 - Now select your text and click Highlight on the Format Text tab
Step 4 - Click Save on the Quick Access bar to make changes permanent
Before and After example:
Ok, if I understand you correctly. These three actions will allow you to highlight text in outlook 2010 but I think something a little more elaborate is required. If so, please elaborate in your question.