Invalid E-mail

[Carnage]

im entering a contest for an autographed copy of leave whisper(shinedown DUHH!!) and it says my emails invalid. i put AShadowsBlaze@yahoo.com and then after a couple of times i put AShadowsBlaze@yahoo what am i doing wrong?

Edit: it tried it with lower cases and it didnt work.

[Leeza]

*moves to Help*

[TasteyPies]

Sometimes sites wont accept free e-mail services. Don't ask me why.

[Peegee]

Yeah, use a eoff email or get a gmail account