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Delivery Reports

The Kaleyra Messaging Platform will return a delivery report (intermediate and/or final,
depending on the route) for a specific message to the client application when the registered_delivery
field, while submitting the message, is set to 1. In order to retrieve the delivery report from our server
the client will have to connect to the Kaleyra Messaging Platform in the receiver or transceiver
mode.

The various status messages pertaining to message delivery and their descriptions are tabulated below:

Status
Description

DELIVRD

Message delivered to handset

FAILED

Message could not be delivered

EXPIRED

Message validity period expired; before any valid trials of submission.

UNDELIV

Unable to deliver message.