dont think it is... only way of doing it is to delete all your messages at the begining of your month and then let them fill up in your sent... ()without your girlfriend reading them!! ) and then delete them in 100s so you know how many you used.

they wont want you to know as then it means you go over and they charge you!!

the allowance doesnt seem to be 300 for some reason? i reckon been ripped off!!