What files and file sizes can I send to the SharePoint site with the e-mail enabled document library and list functionality?
Based on the permissions and other settings you configure for your e-mail enabled lists or libraries you may be able to e-mail in a file up tothe capabilities of e-mail to transfer large files – these are customizable settings on each server. Remember that your mailserver (your corporate e-mail system) may not allow you to send a file over a certain size.