If you can't access it from your PC, you are best asking the person that sent you the file to email it instead. Snap is basically dead as the dozens of topics here will show you.
Hi, the picture may not be available anymore, I don't think Telus keeps them forva long time, for privacy reasons. Nighthawk's idea is the fastest and easiest way for you to get your picture.
Just to confirm, the SNAP site was officially turned down on February 1st, 2015, and no pictures or videos are backed up for retrieval. +1 to Nighthawk and Wally_west suggestions.