How to Register DLT :  For Using Bulk SMS Service, Customer must have to register in DLT portal of any operator, Jio, Airtel, BSNL, SmartPing For Registration These document will be required, 1. Any Business Prove ( Ex : GST Certificate , Trade License..etc) 2. PAN Card ( it is Mandatory for all sms user ) 3. Valid Email id 4. Valid Mobile Number for verification, After Registration, you must have to register your SIX DIGIT Sender id, and template.