Thank you for your post.
We are aware that Send Mail with Outlook 2011 will not send an email if the BODY is empty. Is this the case?
If this is not the case, try changing the default email application to Mail, close, and then change the default email application back to Outlook 2011. Does this help?
If the issue still occurs, another forum member had a similar issue. See the following forum thread to see if that helps:
Thanks a lot !!! It works.