Substack also supports email sign-in, https://substack.com/sign-in?redirect=%2F https://substack.com/sign-in?redirect=%2F ..but they have the option of a pass

Substack also supports email sign-in, https://substack.com/sign-in?redirect=%2F https://substack.com/sign-in?redirect=%2F ..but they have the option of a password sign in as well. It's really a good idea.