The main categories of promotional SMS providers are as per the following. The present SMS marketing procedures in India are of two types:
1) Bulk SMS DND OPEN Route or Transactional SMS Route.
2) Bulk SMS DND FILTER Route or Promotional SMS Route.
At Linking Earth we practice quality and trust at the highest level.If you ever need a quality bulk SMS service in Kolkata or India your first and the ultimate destination would be Linking Earth.