Hi @tzoom,
Thanks for reaching out about this.
Currently, we only return data within the last 6 months via API, as you noted. If you need to retrieve messages beyond this, you can retrieve data up to 1 year from the reports available on zoom.us:
Storing and viewing chat message history – Zoom Help Center.
While this is expected behavior for the API, I can appreciate the need to be able to query further beyond 6 months. If you’re so inclined, I recommend posting a feature request for this here: #feature-requests
Thanks,
Will