Delivery Receipt(DLR) Confirmation

Delivery receipts or “DLR” provide details about the success or failure of an outbound message, such as:

• A status giving an overview of the message delivery.
• A reason code and status, giving further information on the reason for the delivery report.

However, there are additional factors to consider when reviewing a DLR:

• Not all carriers return DLR. Most carriers in the U.S. and Canada return DLR
• Carriers who do return DLR may not always do so reliably. Returning DLR is a lower priority than message delivery, so DLR are not guaranteed. International carriers have been known to change this offering on occasion. Therefore, the lack of a DLR from a carrier may not indicate an issue. DLR are great for spot checking but should not be relied on for 1:1 delivery confirmation.

Missing DLR

If you’ve requested a DLR and have not received one, this likely indicates that the carrier never sent one. While DLR are never 100% guaranteed by any carrier, failure to receive a DLR may indicate that the destination carrier does not support delivery receipts.

The following list is not exhaustive and may change at any time. These are the carriers who at this time do not support DLR:

• Pinger
• Enflick
• TextNow
• TextNow Wireless
• MetroPCS
• Royal St. Comm
• Onvoy Spectrum
• NSR
• Google (Grand Central)
• BWI
• Bandwidth