Unless Noobscraft isn't in compliance with various US laws. There should be a clearly visible 'unsubscribe' link at the bottom of each email, that or a way to change email notification settings.

A quote from an email
"To unsubscribe from these announcements, login to the forum and uncheck "Receive forum announcements and important notifications by email." in your profile."

If you follow those instructions, your email I'll be taken off the announcement list.