When you request SMS delivery notification via receive command or via callback URL, the API will respond with a single letter. These letters are explained below.
Key
Status
Description
q
intermediate
The message is queued on the TextMagic server.
r
intermediate
The message has been sent to the mobile operator .
a
intermediate
The mobile operator has acknowledged the message.
b
intermediate
The mobile operator has queued the message.
d
final
The message has been successfully delivered to the handset.