This appears to be correct based on my extremely limited experience thus far. It's pretty confusing. However, apparently the emails can be disabled: https://substack.com/profile/364398-judd-legum/note/c-144726...

> 1. Go to Settings on the web version of substack.com

> 2. Scroll down to you publications

> 3. Click into any publication you don’t want to get emails.

> 4. Deselect “Receive emails for new posts”

Hoping they improve the experience.