You might be wondering... "Is it possible for Sendspark to show the prospects website from their email address, unless it's a free email address like Gmail?"
And while Sendspark does not have this advanced functionality, you can do this yourself in HubSpot by creating a new "Background Url" contact property.
You would simply...
Create a new Contact Property in HubSpot: Background URL
Create a HubSpot Workflow to determine that Background URL should be for each contact. Likely...
When their website URL is known (which would happen automatically in HubSpot when they have a company email address): their website URL
When their website URL is not know by HubSpot: your website URL
Then, you can use this property, "Background URL" whenever you are importing HubSpot leads into Sendspark to make dynamic videos.
Here's a walkthrough of how you could create this workflow in HubSpot: