There are three messaging related privileges.
Chat User
The Chat User permission provides basic access to the messaging system, including direct messages and limited channel interaction.
What This Permission Allows
Access to Chat interface
Send and receive Direct Messages (DMs)
Participate in Group Messages
Channel Access Behavior
Channels are read-only by default
Users can:
View messages in channels
Stay informed on updates
Users cannot send messages in channels unless additional permissions are granted
Chat: Channel Sending Access
The Channel Sending Access permission extends chat capabilities by allowing users to actively participate in channels.
What This Permission Allows
Send messages in Channels
Reply, interact, and engage in channel conversations
Participate fully in team or organization-wide discussions
Dependency
Requires Chat User permission to be effective
Manage Chat Integration (Admin)
The Manage Chat Integration permission provides administrative control over chat configurations and integrations.
What This Permission Allows
Manage Chat Integrations and deletions
Create and manage Channels
Configure messaging-related settings at an organizational level
Access Level
Typically restricted to Admins or designated power users