Thank you for responding so quickly.
According to wpforms they are using “default WordPress functionality” to verify new users.
New users submit a form, receive an email to verify their address, the link in the email is similar to the first example in my post, the use clicks on the link, and they end up on my confirmation page (similar to the second example in my post).
I would imagine there is a WordPress function that process the verification and redirects the user to a confirmation page, which I’ve configured in wpforms. I’m hoping there’s a hook available for me to read query string variables off the verification URL and append them to the confirmation URL.
I hope that makes more sense.
Thanks again.