Promotional SMS to dnd numbers refers to messages sent for marketing purposes to increase sales and attract more customers. reseller can use this route to send to dnd number.
Smpp gateway Coimbatore is best for sending SMS from the portal that they provide, giving customers a better reach towards their product. You can also become a reseller of this business through bulk SMS white label reseller Coimbatore service.

Also, everyone needs to know about OTP SMS Coimbatore.