Verify Prospect Emails Before Sending Outreach (Claude Cowork Self-Install Kit)

Send your next campaign to addresses that actually exist.

You sent to a hundred prospects, thirty bounced, and now your open rates are tanking and you can't tell if it's the copy or the list. Verifying by hand costs you an hour before every campaign, and you still miss some.

The leak isn't your outreach copy. It's that a bought list rots quietly, so you spend two days writing sequences for contacts you were never going to reach.

What this kit does

Connect Hunter and ask it to check your send list and flag any address that fails verification. You pull the bad ones before the first message goes out, so the campaign lands in inboxes instead of bounce reports.

What you can expect

Bounce rate drops from the 20 to 30 percent range to under 5 percent, which protects your sender reputation on cold campaigns of 50 to 500 contacts. You also recover 1 to 2 hours per campaign you'd have spent chasing bad addresses or working out why deliverability went sideways.

Who it's for

Built for solopreneurs, coaches and consultants, and agencies running cold outreach who'd rather find the dead addresses before the send than after it. This is a self-install kit you run yourself with your own AI agent, built for Claude Cowork first.

What's included

Skip building from scratch. No coding. You get the complete kit your own AI agent reads, sets up, and runs for you, step by step:

• A Start Here guide, so you know exactly what to open first
• The agent install instructions, the part that lets your own AI agent stand the workflow up for you
• A guided setup that interviews you about your business, so the workflow fits how you actually work
• Workflow Briefing: the plan, the inputs, and what done looks like
• Task List your agent follows to build it
• MCP Connection Guide for the tools involved
• Tool Setup notes for accounts, keys, and permissions
• Prompt Library, including the ready-to-run prompt for this workflow
• Troubleshooting and maintenance guide for the common snags
• A Next Steps and Roadmap, so you know what to automate next once this one is running
• A Run Guide you keep, so you can run it any time with no setup again

This one's free, and it's a real kit, not a teaser. You keep it and run it before every campaign, and the Next Steps and Roadmap inside points you at what to automate once this one is running.

What you'll need (not included)

The kit is the workflow, the prompts, and the setup guide. It does not include the tool subscriptions it runs on. You'll need your own Claude with Cowork account and a Hunter account. Those are billed by the tools themselves, not by us.

You'll also need your Claude account on Cowork's Pro plan or higher, so your agent can connect your tools and use the most capable model while it installs the workflow.

Not on Claude? The kit is plain files that describe what to achieve rather than which buttons to press, so a capable AI agent on another platform, like ChatGPT Work, can follow the same steps. If anything doesn't map to your setup, email support and we'll get you working.

How to install this kit

Connect Hunter to Claude using the MCP Connection Guide in the kit and authorize your account. Open the kit in Claude Cowork and run the included prompt against your send list. Step-by-step instructions ship inside every kit, so you're never guessing. See How Self-Install Kits Work for the full walkthrough.

Install once, not every month

If you've been pricing email verification software, this is the install-it-once alternative. You set it up yourself with your own AI agent and keep it, with no monthly seat. Add it to your cart, open it in Claude Cowork, and clean your next send list today.