When right clicking a document and choosing "Send To" and then "Mail Recipient", the email created is in plain text. In order to change this a new shortcut must be made in the Send To menu. To make this shortcut do the following:

1. Open any window and in the address bar at the top navigate to: %APPDATA%MicrosoftWindowsSendTo (You can copy and paste directly from this document)
2. Right click in the folder and select New and then Shortcut
3. Browse for the location of Microsoft Outlook. (For 32bit Windows, Outlook.exe is in C:/Program Files/Microsoft Office/Office12", for 64-bit Windows, Outlook.exe is in C:/Program Files (x86)/Microsoft Office/Office12." The folder may vary depending on the version of Office installed on your computer.
4. After the last quotation marks, enter a space and then copy and paste the following: /c ipm.note (The full path should look like this: "C:/Program Files/Microsoft Office/Office12/Outlook.exe" /c ipm.note)
5. Label the shortcut Mail Recipient Using Outlook.
6. When attaching a file using the Send To menu, select Mail Recipient Using Outlook.