# Safelisting URLs & Emails ### Safelisting URLS & Emails for Horizon Education Safelisting, or a safelist (allowlist), is a cybersecurity strategy that approves a list of email addresses, IP addresses, domain names, or applications while denying all others. This is mainly for your IT administrators to use as a list of sites to allow just in case they get caught by IT protection. **Please safelist the following addresses:** ​​ ​ \*.horizoneducation.com horizoneducation.com​ ​\*.learnosity.com​ **The Email Server Domain:** [em9734.horizoneducation.com](http://em9734.horizoneducation.com/) **‍** --- # 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://support.horizoneducation.com/admin-only-features/safelisting-urls-and-emails.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.