How do you choose a suitable bulk SMS service provider in India?

Just by googling the Word "bulk sms" google search shows you hundreds of results. Almost all of them offer sms services.

It is important to find a company that fulfills your requirements. The obvious method to choose a suitable company is to pick a handful of top companies and test their services for a certain period of time. Then compare the features, support, service, etc. for the price offered. With this process you will pick the company that matches your requirements.