Is a "presence" state of a user kept in the server?

By presence, I mean “does the server keep track of which channel a user is in at the moment?”
I’m guessing this is not the case, and the read receipt is updated only via explicitly ACKing messages as read, but just to make sure.

Hi @GoGo7,

You are correct that we do not know specifically what channel the user is in at any given time. This is handled by explicitly calling markedAsRead in the respective SDKs.

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Thank you. Appreciate the quick answer.