There is a huge difference between Promotional SMS and Transactional SMS so please read carefully before using it.
Promotional SMS: Promotional SMS is using for sending best offers, discounts to grow business with the best offers in this competitive world. Delivered to Non DND numbers only. Sending time is Morning 10 to Evening 9. Message will deliver with numeric sender id (AM-596241). Note : DLT Registration is mandatory.
Transactional SMS: Transactional SMS is using for OTPs, Order alerts, booking status, Banking Transactions with secured under permissions and can not be sent by any illegal authority. Delivered to DND and Non DND numbers. Sending time is 24*7. Message will deliver with your DLT registered sender id (AM-LGNUTI). Note : DLT Registration is mandatory.