ImapX allows you to create a log file with all requests sent and all responses received. In order to do this, do the following
// Add this on application startup, remember to change the path
Debug.AutoFlush = true;
// After you created the client, set
client.IsDebug = true;
Also remember to turn on the "Define DEBUG constant" setting in your project's build properties.
Important: Please consider that the log file will contain the login and password you have used. Remeber to remove it before you send the log for review!