Slack: View Channel Members
There are several ways that you are able to see who has joined your channel.Â
 Instructions
Method 1: Desktop or Mobile
Select the group channel.
In the message bar, type /who .
The names will only be visible to you.
Method 2: Desktop
Select the group channel.
The person icon in the upper right corner of the channel will display the number of members.
Select View all members in this channel for a list of all members' names.
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