# Starstream Advanced Features Overview {% embed url="" %} Watch this 12 minutes deep dive into Starstream advanced features to learn how to: * Edit ticket email and SMS content * Edit register confirmation email and SMS content * Insert decorative HTML inside the email body * Send test tickets * Use template variables * Understand the "last tickets sold" list and Starstream fee * Send the ticket immediately after checkout * Change the free checkout email * Change the sender email * Send replay of the event to the attendees after the event finishes * Change default template --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://help-center.starstream.app/starstream-settings-and-preferences/starstream-advanced-features-overview.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.