[MM3-users] Can mailman3 use google or cloudflare captcha ?

Hello,

I can setup client side for any of captcha in /opt/mailman/venv/lib/python3.9/site-packages/django_mailman3/templates/account/login.html. However, I don't understand where I should I put captcha code(Server-side validation) for mailman3. is there any tip to setup captcha ?