I submitted a title to IMDb for a fan film made in 2009. I got a message from IMDb staff asking for more evidence of the title (I think video clips of the film). I can't respond to that email so how can I get back to that member of staff with the evidence?
The best thing to do in this case is resubmit your title with the additional/requested evidence.
You don't have to re-enter all the data -- you can easily update your previous title submission by going back to your title submission in your update history at http://www.imdb.com/updates/history and clicking on the corresponding update reference number.