Follow the below steps to send OTP seamlessly-
i) Sender ID Approval (Some countries have specific rules and regulations for Sender ID) -
To send OTP globally - Follow sender ID rules for different countries
#Note - For Indian companies to send OTP in India - Follow the DLT guide
ii) Template (To keep your communication secure, spam free, and easy to edit anytime)
Create a template for sending OTP in OTP Section- Follow it's quick process
iii) OTP Widget - You can integrate the dedicated widget for OTP Login and all the Send, Resend, and Verify OTP APIs can be called by MSG91 at one place. Here is the Helpdoc. [Recommended]
OR
If there is any specific use case that cannot be served by the OTP widget, you can directly integrate the SendOTP APIs at your backend, here is the API Doc.