Yes, Clearout now has direct integration with Hubspot to validate your list. You can validate your leads:
- Bulk validation: pull the list from HubSpot and validate it.
- form validation: this direct integration with the contact form that you are using and validate your leads as and when they sign-up.
In case, you are using Wordpress contact forms then you can use Clearout plugin available to validate your leads with Clearout Wordpress plugin.