If you are in India and want to send bulk sms messages for free, you can do it easily with SMS XL. It’s a great utility that lets you send text and pager messages direct from Microsoft Excel to any Indian number. All you need to do is, Just import your phone data into Microsoft Excel, set up an SMS message template and you are good to go! With this great SMS plugin you also can add your signature, preview the message before sending etc.
SMS XL is a nifty plug-in that lets you add any message to each of the mobile phone numbers in the excel list and send them the same text message instantly. So if you have a huge contact list, you can use SMS XL to send them messages for free and very easily.