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I need Dot NET ( C#.Net or VB.Net ) application to send and receive whatsapp message :
- The application should be connected to SQL server database to fetch the contacts.
- The application should be able to handle huge number of contacts.
- The application should be able to send whatsapp message regardless of the platform they use, iOS, blackberry, Android, etc)
- The user should be able to classify Numbers.
- The user should be able to choose all contacts or specific contact to send whatsapp message.