Are we able to add our own JavaScript code snippets and CSS code to the site elements? Use case would be for tracking user anayltics, heatmaping, and other thirdparty tools integrations?

We would like to know if it’s possible to configure transactional and broadcast emails under "Essential Config > Core" to be sent from our own brand domain (e.g., [email protected] \ [email protected]) instead of the default domain used by your...