I have a coupon which I have also generated bulk coupons.

I have a rule which runs when a new account is made

Using rules how would i go about allocating 1 of these bulk generated coupons to a customer and then emailing the coupon to them.
This allocated coupon should only be able to be used by that customer.

When i tried to set this up, the tokens available in rules for me only allow the base coupon to be emailed or the whole list of bulk generated coupons.