All aspects of your UltraSMTP account can be configured by logging into your account at https://www.ultrasmtp.com/. After logging in, click 'account settings'. From there you can add/remove email address registered on your account, enable/disable options such as Opened Message Tracking and Document Delivery Confirmation, and enable/disable email status notices for these options.


Related:
Getting Started With UltraSMTP
Configuring Your Mail Client to Send Outgoing Mail Through UltraSMTP