If you are messaging another MySudo user, there are five different delivery status updates:
Sending: message is on its way
Sent: message has left your device and is awaiting to be accepted by contact's device
Delivered: message has reached contact's device and contact has not read message
Read: contact has read your delivered message
Failed: message was not successfully sent
Please Note: There are no message status updates available if you are messaging a non-MySudo user.