Enable Custom Domain for free acccounts

Feature: Provide custom domain option for free accounts

Description: Currently Okta provides this possibility to free clients, you just need to prove that you are owning domain with DNS entry. Auth0 provides same but only for paid accounts.

Use-case: 3rd party cookies are not always working because of browsers restrictions for iframes.

My goal is to create a hobby project with easy passwordless authentication (with WebAuthn) with silent refresh

Actually you have listed all issues yourself Custom Domains

Why Auth0 do not provide this functionality for free? It’s definitely LetsEncrypt free certificates, Auth0 do not pay anything for hosting different to usual development url.