Restrict wildcard mentions

This feature is only available to organization owners and administrators.

Organization administrators can configure who is allowed to use wildcard mentions that affect a large number of users. In particular, an organization can restrict who is allowed to use @all (and, equivalently, @everyone and @channel) in channels with more than 15 subscribers, and @topic in topics with more than 15 participants.

  1. Click on the gear () icon in the upper right corner of the web or desktop app.

  2. Select Organization settings.

  3. On the left, click Organization permissions.

  4. Under Channel permissions, configure Who can notify a large number of users with a wildcard mention.

  5. Click Save changes.