[Chapman]

You should try one of the many free sites on the Internet for transferring files that are too large for old and limited mail systems.
Instead of stretching the mail account with your ISP, you get a link for downloading the file at your own pace in civilised way.
I'm surprised that the organizers behind SRM don't already offer this service.

Some popular download go-betweeners for large files to try here:

https://www.yousendit.com/
http://www.sendspace.com/
https://www.transferbigfiles.com/