Slack has some pretty weird blind spots as a business, too, like that one where all your hundreds or tens-of-thousands of employees must be part of the same general chat channel, where anyone can ping the entire company.
It takes 5 seconds to change the permissions on that channel to restrict posting to admins only. We figured that out a few hours after rolling Slack out to a small subset of users to test.
They've been spending their their effort giving you their third version of a message-composition "block API" that still doesn't-quite-work as documented.
It takes 5 seconds to change the permissions on that channel to restrict posting to admins only. We figured that out a few hours after rolling Slack out to a small subset of users to test.