> ## 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.

# createThreadFromSlackMessage

> Creates a thread from a top-level message in a connected customer Slack channel, along with the
replies Plain has already received for it. This is the trigger for the `API_ONLY` ingestion
mode, and works in every other mode too. Ingestion runs asynchronously, so `thread` is
returned only when the message had already been ingested. Requires the `thread:create`
permission.

This is not a way to import historic conversations: only replies Plain saw over the Slack
events API are included, so a message from before the Plain bot joined the channel becomes a
thread missing everything that was said before then.