Chase Raz
If you need a fix for this now while BlogHunch is adding it, you can grab the JavaScript from this JSFiddle and add it as a code injection into the site's footer. It disables the Submit button (and turns it gray) until the injected "Agree to receive email" checkbox has been clicked. Be sure to review the code and update any messages like where I've put 'YOUR NAME HERE'.
An email-based double opt-in from BlogHunch would be ideal, but this works for some folks in the meantime.
https://jsfiddle.net/chaseraz/kc6xt5Ln/1/
Chase Raz
I've updated the code available from this JSFiddle to also now change the cursor. Until the "Agree to receive email" checkbox is checked, the grayed-out submit button will show an arrow (default) cursor instead of the hand (link) cursor.
S
Subham Mitra
in progress