# Cron tasks

Cron tasks can be enabled in `Options -> Scheduled tasks (cron)` 

The settings panel will provide you with the URL that you must use to execute it, as well as settings to decide which tasks will run.

There's also a security key that must be provided with the URL for validation and can be changed here as well.

Current tasks include:

* Send pending email notifications
* Delete expired files
* Delete [orphan files](https://docs.projectsend.org/about/how-to-use/files/orphan-files)