Prerequisites
- Enable ultra group service
- Only the Chat Ultimate Plan supports this feature in production environments.
Setup
Modify the ultra group service settings in the ultra group service page of the Console.
- Self-service setup (configuration name: Can non-members retrieve history messages)
- Paid setup (included in the Chat Ultimate Plan, no extra charge)
Configuration
By default, non-members can’t retrieve history messages. Once enabled, they can access history messages. Note, only messages in public channels.