We don’t use Slack internally anywhere for privacy reasons, but I’m known to share a channel with clients who already do, so we can collaborate on projects. Last week I went through and created a private channel, added all the contacts, before realising I’d wanted it to be public with everyone in my organisation.
I figured it’d be easy to flip a private channel to public. Alas, no:
Unfortunately, this is not yet possible - we believe private conversations should stay private, and generally encourage our customers to rename & archive private channels that have outlived their purpose.
I appreciate the sentiment, but for a brand new room that’s never been used, it should be a switch we can flick.
(It’s also worth noting that anything posted on chat software that doesn’t do client-side encryption must be considered public anyway).