Cold Email to Webinar?

Has anyone ever (successfully) run a cold email campaign to a webinar their running?

I'm looking for some strategies to model.

This is currently for pre-selling a SAAS product.

The webinar is teaching them about how they can improve a process in their business. Then at the end "and we're building this tool that will automate it for you. It will be ready in 3 months and we're looking for some VIP customers to help fund it, and they will get XYZ in return etc).

Anyone ever done this?