lol ... well it more a case that, alot of people mail boxes don't normally get too large.
My AOL one is one of the larger once i've seen which still has a limit of 16Mb send|recieve per email... though i've got them as large as 160Mb before (not fun on an isdn lol)
actually the point more is here, say 5 people send you projects now some will be small but most will be between 5-50mb ... so if thats the case it'll take YOU between 15min to 4hours to download then a further 25min-7hours to upload and thats per upload!
i know personally I wouldn't have the time to be on the internet that long whilst i run all sorts of other things, and have to wait between reboots incase i install ne hardware or run out of memory and can't reset it.
Plus i know all too well how in a big transfer the connection decides at like 90% just to go :: CLICK :: and your offline.
so ya know i'm not saying this just for pure speed, but also to say YOU time and effort
if you need to know howto program it hop over to
http://www.lycos.co.uk under Build a Site there is a php4u section - will help you
a better option might be to download a forum which can front and allow users to access and upload in the forum - as long as the hotlinking is allowed which i'm guessing is, then all you'll need to do is link the upload within the forum
Anata aru kowagaru no watashi!