HandiSoft Notify requires that you pre-purchase text messages.
You will be charged for each originating message of up to 160 characters sent to a mobile phone. For example, if you send a message to a group of 10 mobile numbers the charge will be for 10 messages.
Pre-purchased SMS messages are valid for a period of 90 days from the time of purchase. Purchasing additional messages before the current expiry date will extend the life of all messages to the new expiry date.