Using mobile phone technology, SMS and voice calls are commonly use in doing communications.
Common users for mobile phones, land line phones prefer to communicate using voice calls for two way communications and teleconferencing.
There are also situations where short-message-service (SMS) is utilized instead of a voice call.
SMS usage is dominantly useful if you are targeting massive recipients for your information drives.
Sending SMS manually is very tiresome if you are targeting hundreds or thousands of recipients.
With the aid of computer and necessary gadgets, sending of text message will become automated and can be easily programmed in the computer to do an auto pilot task.
In the Internet, there are several commercially available SMS packages and devices that will remarkably adopt your needs.
Some I have known are packages that require annual licensing, subscription fees and a minimum order of prepaid SMS.
There are also SMS packages that require you to register in their SMS server and will charge you based on the number of SMS you have transmitted.
If you are a heavy SMS user, it is very costly in your side if you are sending thousands of text messages per day.
SMS services packages specified above is not your smart option.
In order for you to be freed from subscription fees and avoid the charge per SMS transmitted usage, I suggest that you purchase the SMS blaster device itself.
One of the best massive text messaging gadgets I found in the internet is a product named "Mobile SMS Blaster" from Gellangarin Computers.