WAY 2 SMS site is the free SMS site. through this you can send unlimited free SMS to anyone in India. Previously when there is not so found of internet and SMS is also not free then I always use to this service and there is no complain in delivery and anything.
To send the free SMS you just need to Register your number and then you can start messaging to anyone. You can also save number for future messaging.
Now also whenever I want to send bulk message I always use this free SMS. Best thing is message got delivered within a minute without fail.