Yes, the OTP route is generally for sending OTPIf you are looking for OTP services, we would suggest you opt for the OTP route because it has various advantages over the traditional transactional route:

  1. Voice and Email backup for failed or delayed SMS OTP
  2. We generate and send OTP on your behalf; User has to only verify. You just have to call our API.
  3. The backend algorithm makes sure that OTP is processed from our end in less than half a second.

You can connect with your Kaleyra Account manager to know more about our OTP services and the integration of these services.

Since Transactional messages are not as time-bound as OTP messages, the mechanism of triggering and delivery of these messages are within a time frame or around 4-6 hours, depending on the end customer's network and availability.

In case you have any queries, you may also write to