bc likely it’s because the submitter is mis-using movieclips if they need to submit more than 1

not all cases, of course, but usually this would be the case

for example, a character with different perspectives/joined together?
doesn’t need to be multiple files – can be one movieclip with each perspective on each frame

if you truly need to submit a pack of movieclips, you can do so manually but leave the general formatting/subject/to: of the email as it is if the app were to generate it