OptionaldlvrdNumber of messages delivered (dlvrd).
OptionaldoneThe done date (done date), in the SMSC's YYMMDDhhmm format.
OptionalerrThe network error code (err).
OptionalidThe message_id of the original submit_sm this receipt is for.
OptionalstatThe final message state (stat), e.g. DELIVRD, EXPIRED, UNDELIV.
OptionalsubNumber of messages submitted (sub).
OptionalsubmitThe submit date (submit date), in the SMSC's YYMMDDhhmm format.
OptionaltextThe leading bytes of the original message (text / Text).
A parsed SMSC delivery receipt, extracted from a
deliver_smshort_message.Delivery receipts use a loosely standardized
key:valuetext format; every field is optional here because SMSCs vary. See parseDeliveryReceipt.Since
1.0.3