Between 04:00 and 13:00 (UTC) on the 14th Apr 2021, the carrier US Sprint will be performing maintenance on their SMS platform.
During the maintenance window, customers might experience intermittent latency in delivery report messages, however in the unlikely event of a disruption to the service, messages will be queued by the carrier for delivery once the maintenance has been completed.
Please contact
support@nexmo.com if you have any questions.