How do i get the key for the closed alpha?

I donated money, but i havnt gotten a key on steam or on this website, or even as an email.

You should receive an email at some point with a key included. The Alpha will not go via steam and will be standalone. I presume that the keys will be sent before 6pm PST (which is the time that they hope to launch the alpha)

thanks!

wait, which email? the one i use to pay, or my account on here?

You will get a key through the email that you used when pledging to the campaign on indiegogo.