Preview channel before joining

In Slack, you have the option to preview recent
messages/channel description/etc in a channel before joining it. I find
that useful since it may not always be clear based on only the channel name
whether it's relevant to your interests/needs. I'd prefer not to quickly
join/leave a Teamhub channel to perform a similar evaluation (adding to the
join/leave message noise in a channel for people who choose to see those
messages), so please consider adding a channel preview feature.

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*Derek Gottlieb*
Sangoma | Cloud Janitor | Engineering / Switchvox Cloud Dev