Where is zabbix's alarm script directory?

Zabbix media types include email, SMS and custom scripts. We use script media the most, and then we don't talk about the other two media. When the event is notified to the script, three parameters are passed, namely $ 1 (to whom) $2 (title) $3 (content). For example, send an email to support@ttlsa.com with the title nginx offline, and the content is the IP address:1.1.1.1. Nginx is offline, please handle it immediately.