If it has to do with Yedda in some way, I believe you should use the 'Feedback' link which you will find at the upper right corner of your screen.
Once the page loads, select the appropriate topic from the pull-down menu and then type your message in the accompanying text box.
Be sure to provide the details of your problem (as well as a link to the specific email in question) along with valid contact information should there be any further questions.