Delivery reports (DLR) usually take 24 hours to be updated and for international messages only.
It is worth mentioning that after Kuwait implemented mobile number portability (MNP) the delivery reports are not accurate.
They are not to be relied on to measure SMS campaign effectiveness or link open rate. Delivery reports for Kuwait will be disabled in the future.
+ How to add OTP messages to my App or website?
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+ What are the requirements for SenderID registration?