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How to send free sms from asp.net 3.5 application to mobile.
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[no name] 25-May-15 12:41pm    
You do some research and write some code.

You'll need to find a provider to send the sms through and they will have an api you can use and normally sample code too, but the apis tend to be quite simple and easy. Unless your text messages come with adverts the provider will charge you. There is no in-built mechanism to send sms messages and no free network to send them over. If you could simply send free text messages then mobile phone companies wouldn't exist.
 
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ASP.NET developers and users have a very much faith in Twilio[^]. If you go to any article or resource for SMS-based applications and notification your will find that they (even I remember that the Microsoft Virtual Academy guy did) use the Twilio.

Twilio is a gateway for sending SMS from your applications to mobile operators across globe, yes at a charge. You can create a new account and simply get your tokens from them. Then start sending SMS from your application. They would guide you throughout the process in a very simple and easy way. Have a look at their documentations and API[^].

Note: If there is a free service for such expensive task, do not use. It might be a spam or malware service tracking you or your clients for making money. They, anyway, do get paid.
 
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