By default, your content in Slab is not accessible outside your team. To make a post externally accessible outside of your team, just click Share in the top-right corner and toggle Create a public link.
Anyone with the link will be able to view the post as read-only without needing to sign up or log into Slab!
When posts in a series are made public, external readers will be able to navigate the series without needing to log into Slab.