Article ID: 234487 - View products that this article applies to.
This article was previously published under Q234487
An Outlook plain text message is opened if you perform either of the following:
This issue can occur when you try to send mail as described in the symptoms. The methods described use the simple Messaging Application Programming Interface (MAPI) function MAPISendMail(), which does not use the Outlook default message format. This function always creates a plain text formatted message.
To work around this issue, change the Sendto function to use the Outlook default message format, for example, Rich Text Format (RTF) or Hypertext Markup Language (HTML). (To set the Outlook default message format, click Options on the Tools menu, click Mail Format, and in the Send in this message format list, click the format that you want to use.)
To change the Sendto function to use the Outlook default message format, you need to create a shortcut in the Send To folder that calls an Outlook formatted message window:
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" /aWhere 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" /aFor 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