I really know what am saying, instead of searching here and there for free sms stuffs, i bet it you can simply send a message on your while the recieving side pays for the message. Simple and clear.
This service is been set up for customers with low or not wanting to use up their credit in sending sms, who really needs to get a message sent accross to other customers on the mtn network.
Take note: Your reciever will have to accept the charges before its been deducted from his/her account, thats cool though and avoids commotion.
To enjoy the service Simply send your sms to 38701 followed by the receipient’s mtn number

This service is really amazing, you can give it a try to see how it works and dont forget to share this post with your friends.
Cheers!
Source: www.eficoblog.com/mtn-collect-sms-allows-you-to-send-a-message-while-the-receiver-pays/