SMS Delivery States

Type Value Description
ENROUTE 1 The message is in enroute status
DELIVERED 2 Message delivered to destination
EXPIRED 3 Message validity period has expired
DELETED 4 Message has been deleted
UNDELIVERABLE 5 Message is undeliverable
ACCEPTED 6 Message is in an “accepted” state (i.e. the message has been manually read on behalf of the subscriber by customer service)
UNKNOWN 7 Message is in an invalid state
REJECTED 8 Message is in a rejected state