Create a Triggered Send Using the Async API
By using the async API, you can ensure that your call is queued and ready to execute after the call is completed, even if your network connection is interrupted. You can also prioritize triggered sends and use the
ConversationID objects to track an exchange of emails related to the triggered send.
This feature isn't enabled by default in most accounts. Contact your Account Executive to learn more about this feature and to enable it for your account.