It is better to wait 4-5 business days atleast before u send them the recpt as it gives them some room to process your payments..
no point bothering them without need as it results in further delays I have seen..
after 4-5 business days just send one mail from ur scotia account attaching your recpt and quoting ur account number n details..
I did just that and got my GIC in the mail the next day..
In fact, i waited 8 working days before sendig recpt..