this is a one of the cool option with IE and Outlook integration by which one can send the complete HTML page as an Outlook message without loosing any formatting. I am very fond of this feature for saving all the content of my favorite pages.
This feature by default works with IE and Outlook’s default settings. For this to work, ensure your default Outlook mail format is HTML as detailed below:
In outlook -> Tools -> Options -> in the Options dialog box, select the Mail Format tab -> From the Compose in This Message Format drop-down list, choose HTML.
Once you have Outlook settings configured fine, open any page whose content you wish to save/send in Outlook message format, then click “File” -> “Send” -> “Page by E-mail..”