ProspectAI is a Windows desktop tool for BtoB cold outreach that keeps everything on your machine. Claude Sonnet drafts your initial emails and follow-up sequences; the app sends them automatically through Gmail, Outlook, or any SMTP server you already use. Because there's no cloud backend, your contact data never leaves your PC — a practical answer to GDPR concerns for freelancers and small teams who handle their own prospecting. You pay once for a lifetime license instead of stacking another SaaS subscription. The pitch is straightforward: serious cold-email automation without the recurring cost or data-sharing trade-offs that come with most cloud-based sequencers.