The workaound given in this article does not work with Microsoft Outlook 2010 and Microsoft Outlook 2013. If you try to use the /c command line option, you see the following error:
Cannot start Microsoft Outlook. The command line argument is not valid. Verify the switch you are using.
However, you can create a shortcut that sends a file as an attachment. Additionally, the Outlook default message format is used. To create a shortcut that sends files as attachments, replace the path in step 4 of the Workaround section with the following string:
"c:\Program Files (x86)\Microsoft Office\OfficeXX\Outlook.exe" /a
Where
XX is
14 for Outlook 2010 and
15 for Outlook 2013.
On a 32-bit operating system, the path resembles the following string:
"c:\Program Files\Microsoft Office\OfficeXX\Outlook.exe" /a
For an Office 2013 Click-to-Run installation, the Outlook.exe file is located in the following folder:
c:\Program Files\Microsoft Office 15\root\office15