Today, the company is unveiling a new feature called “Sign in with Slack” — which will let Slack users sign into and use other apps using their Slack identities.

Slack liberates your inbox, lets you organize office chats around any topic you choose, and—perhaps best of all—equips you to create custom emoji of your colleagues' faces.

1. After you sign into Slack, click the workspace name, located at the top of the left sidebar. Click the workspace name in the top left corner. Devon Delfino/Business Insider 2. Select "Leave # ...