Hi all, is there a way for either an UI app or kratos BE to add an extra step during signup or verification flow to call another service to validate that the email is legit before attempting to send the verification email? Since the form for signup is returned as a self contained form it's hard to hijack the email out of it prior to form submission, wondering if anyone has experienced this before? (Basically looking for a way to do something with user email prior to registering their account, to ensure bots are not using our service to spam invalid emails)

I am not sure how to do that, but would CAPTCHA also be an option to mitigate bots: https://www.ory.sh/kratos/docs/next/concepts/security/#anti-automation ?