Sorry but I don't currently have a way to batch resend the verification emails. You could resend them individually by entering the email address in as if signing up again. But I think you should also consider the possibility and liklihood that many or most of those are invalid. There is no captcha required and there are lots of bots crawling the internet filling out forms and submitting buttons.

I will log a request in our project tracker to add the ability to resend the unverified ones in a batch or individually with a button, but I'm not sure when I will get to it and I have no immediate solution for you on that

Best,

Joe