Here is a list of file sharing tools for students and teachers. Using these tools can help you avoid having an email inbox that is overflowing with file attachments.
http://www.freetech4teachers.com/2012/06/15-free-tools-for-collecting-storing.html
DawsonITE is a blog devoted to Educational Technology. It's compiled by Rafael Scapin, Coordinator of Educational Technology at Dawson College in Montreal (Canada).