What is DND? DND is a service that prevents unsolicited promotional SMS messages on your phone. Bulk SMS services, like the ones provided by Shree Tripada, help businesses send mass messages to their customers while ensuring compliance with DND regulations. To avoid disturbing users who are on the DND check, businesses can use features like OTP buy to authenticate users without violat... https://www.shreetripada.com/what-is-dnd-service-in-bulk-sms.php