Transactional SMSs are considered essential messages and are not promotional in nature. They are usually sent to customers who have already opted-in to receive communication from the company. As per the regulations set by the Telecom Regulatory Authority of India (TRAI), transactional SMS can be sent 24/7, including on DND (Do Not Disturb) activated numbers.

Promotional SMS is a type of text message that is sent by businesses or organizations to promote their products or services to potential or existing customers. These messages are usually promotional in nature and are sent to a large number of people at once. Promotional SMSs are sent with the intention of generating leads, increasing sales, or creating brand awareness.

Smart link SMSs are widely used by businesses and organizations for various purposes, such as promotions, product launches, event invitations, surveys, and more. These messages are effective because they allow the recipient to access additional information or complete an action with just a single click.