Have you checked your Junk folder?

Two things, if it will not send you an email, maybe you should try to use a different email, or you can click the button "missed the activation email" up on the top-right of the screen. If you click that, you can put in a different email if needed be.

Simply by the fact that you are posting here, your account has been activated. You do not need to receive an activation email again.

If you actually read our information on the Server Membership you will see:

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If you already have an account on here, but it isn't connected to an in-game account and you want to add this connection you will still need to fill out the form .
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For you to become a member on the server, you need to click the large banner which says "Apply for Server Membership" and then fill out the membership request form. You do not need to do anything regarding your emails.