In the initial release of Xplor Transactional Emails (1.0), there will not be visibility into logs for sent messages. In the meantime, our support team can assist—please provide the date/time of the sent message from the 'Message Class' feature in Mariana Tek.
Additional visibility into sent transactional messages will be available in an upcoming release of Xplor Transactional Email! Sent transactional message logs will appear on a contact's timeline along with promotional messages sent.