Chrome Extension for Marketing Contacts for lead generation

I want a Google Chrome extension that, whenever I enter a company domain, automatically finds publicly available contact details for the firm’s marketing managers or sales staff. The data I need captured is the person’s full name, a working email address, and a direct phone number. I do not have a predefined list of organizations, so the solution must work for any company, across any industry.

Here’s how I picture the workflow: I type a domain or name into the extension—press “Search”, and within a few seconds see a clean table of relevant contacts. From there I should be able to copy the info or export it as an excel. I’m open to whatever back-end method you prefer—scraping, API integrations such as Hunter, Clearbit, Apollo, LinkedIn search, etc.—as long as results are accurate and legally sourced.

Deliverables
• A packaged, installable Chrome extension with an intuitive pop-up interface
• Source code (JS/TS, manifest v3, etc.) plus brief setup instructions
• CSV export and one-click copy to clipboard
• Basic error handling and rate-limit safeguards
• Short read-me covering data sources, usage limits, and privacy compliance

Acceptance criteria: given five randomly chosen company domains, the extension returns at least one valid marketing or sales contact, with emails that pass a verification check.

If you have built similar lead-generation or prospecting tools, let me see a demo or quick video so I can move fast.