> ## Documentation Index
> Fetch the complete documentation index at: https://www.plain.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Triggers

> What can start a workflow, from a new thread to a schedule.

Triggers control when a workflow starts. Conditions are decision points inside the workflow that check something about the thread and split the flow into two paths.

<Frame>
  <img src="https://mintcdn.com/plain/O6H8aFQxBwl-gnm6/public/images/workflows-triggers.gif?s=865b72d0e50d6eec7da0597ecb157279" alt="Triggers in Plain" width="1920" height="1080" data-path="public/images/workflows-triggers.gif" />
</Frame>

## Manual

You run the workflow yourself. Open a thread, click **Run workflow**, and select which workflow to run. Useful for on-demand processes like escalation procedures.

## Automatic

The workflow runs automatically when a thread event happens. You choose which events during setup:

* Thread created

* Message added

* Labels changed

* Tier updated

* Thread escalated

* Priority changed

* Status changed

* Thread field created

* Thread field updated

You can select multiple events for one workflow. For example, trigger on both "Thread created" and "Message added" to catch new threads and follow-up messages.