There are several message status after send message.
- Sent : the message is sent successfully
- Processing : the message is on process to be sent
- Pending : the message haven't sent due to device not connected or failed to process. The message will be resend in the next minute
- Waiting : the message is on scheduled time to be sent
- Invalid : the message cannot be sent due to invalid target number or invalid parameter
- Failed : the message contains invalid content that our server cannot process
- Expired : the message will not be sent by system due to 1 day of disconnected device. manual resend is required if you still want to send the message.
- Url unreachable : the message cannot be sent due to unreachable url when sending an attachment.