> For the complete documentation index, see [llms.txt](https://docs.pushpushgo.company/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.pushpushgo.company/automation/automation/create-automation/step/trigger.md).

# Trigger

Trigger is an event, that will enable the automation flow for a particular subscriber that meets the conditions. There are four trigger options:

* Session start - first beacon in the session
* Session end - 10 minutes after the first beacon in the session
* Subscribed - subscribing to push notifications
* API call - any event that you can send to us via API