For "Recipient email address" use "yousendit@ezslides.com" and for "Message to recipient" use "files from (your name)". The "Type of file" you select seems to have a bearing on what kind of ad the comapny shows you after you send the file. They rely on advertising income to provide their free service.
Photographic Specialties is no longer producing slides and transparencies. I have been self-employed for 35 years, but looking forward to retirement since my wife died five years ago. With the decline of conventional photography and the recent recession, the availability of film and chemicals as well as the volume of work has declined to such an extent that it is no longer possible to have fresh chemicals to develop film. I hope that if you still need conventional slides and transparencies, you will be able to find someone who can produce them for you. Thank you for your orders over the years.