> ## 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.

# searchThreads

> Full-text search across thread titles, message contents, and customer names/emails. Accepts optional `ThreadsFilter` to narrow results further. For exact lookups by ID, ref, or external ID use the dedicated queries instead. Requires the `thread:read` permission.