> For the complete documentation index, see [llms.txt](https://docs.projectsend.org/about/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.projectsend.org/about/how-to-use/cron-tasks.md).

# 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](/about/how-to-use/files/orphan-files.md)