We do have another tool that will allow you send out a form, it is the contact form Solution Pack.
The problem you are describing seems unusual. Have you tried creating an email page and in the body just insert a simple test message, no form or other info? This is a test you should make to see if it is the type of message body you are attempting to create that is part of the problem.
As a potential solution you can try deleting your config folder to have DW recreate it for you. Here is a link to a thread post that discusses how to do this:
showpost.php?p=12293&postcount=2
