Hum, I do something like that with my personal mail services: an alias (created by hand or random depending on where I use it) that I can keep as long as I want

Hum, I do something like that with my personal mail services: an alias (created by hand or random depending on where I use it) that I can keep as long as I want, dispose when I want, I can easy discover spam sources and easily filter messages simply using To: field etc... It do more things, at the price of costing money (not much really), I mean I have free unlimited alias but I pay a fee for mail service as a whole. Your project may help students and in general people who can't easy pay for personal mail so kudos for that :-)