Daily/Monthly Data/Traffic Usage

Please, how can I be seeing and receiving on my mail box, the total data traffic on daily, weekly and monthly usage of my Mikrotik router network?

This script, based on Kid Control, might be a solution ?
I used it for a while on a small capsman controlled vacation house setup to control/limit tenants wifi usage.

http://forum.mikrotik.com/t/per-ip-wan-traffic-statistics/157975/22