I was investigating this today and came across your question. It doesn’t seem possible to refresh the JWT on the fly after verification without making the user log out and log in again.
But for my case, I went for the solution of a proxy endpoint to the Auth0 Management API because I need the information only in a specific view. Check if email_verified without signing in again. - #2 by jmangelo
Another solution is to force the user to log out and log in again. You could do this from a custom verification screen, the one seen after the user clicks the verification link. Then, the JWT should be refreshed, and so the session object will have email_verified true. I’ve occasionally seen websites that do this.
And finally, probably the best solution is a combination of the two. While you can’t update the JWT on the fly, you can update the session, setting email_verified to true from the verification screen after checking the email is verified with the Management API. UpdateSession | @auth0/nextjs-auth0
Hope this helps!