ATTN: People planning on taking the PSAT.
Set up a new e-mail address for the sake of containing all the spam from colleges.
When I took the PSAT eleven months ago (which means it's only one month from now, thank you, modular arithmetic), I filled in a bubble that essentially gave consent for colleges to spam me with messages that told me to "consider applying" to them.
My inbox is now filled to the brim with literally hundreds of such messages, and I'm using the word "literally" correctly. It'll take me a while to clear them all (but that's because I'm a bit lazy when it comes to sorting through my e-mail).
So yeah, having one e-mail address for the sake of college admissions is an organizational boon IMO.
P.S: I hate to sound cynical here, but colleges message you with such e-mails not because they actually want you to be a part of the school, but because they want you to at least send them the hefty admissions fee that will undoubtedly come with your application.
P.P.S: I bet some of you have already taken such precautions already. If so, congratulations.