You can send sms from free gateways like
If you want more gateways to be added just mail me.
You just need to have an working internet connection. No SMS charges will be applied. You can send unlimited SMS in a day.
# Send multiple SMS at one shot
# Remembers your username, password and gateway ever or until you logout.
# Get receipt’s mobile numbers from your mobile contacts.
# Choose your SMS from the in-built huge SMS collection of every occasion.
# Character limit of a maximum of 260 characters (Site2SMS).
# Your mobile number in sender ID (YouMint).
# Delivery within seconds.
# Delivery Reports.
# All operations on external server.
A special thing about this app is that all the complex operations like recognizing the response from gateway, formatting the message and numbers are all done on external server, thus saving a lot of your battery life and RAM. Also if the gateway’s change the way user login and send sms, no worries, you need not to update your app, I will just fix it in the server and the app will be fine again.
This is not the official app and is not associated with the gateway in any manner.