EmailSweeper validates unlimited emails without limits. Built because competitors charge $500/month for something you can do locally. This tool runs on your computer, checks email format + domain configuration (MX records, SPF, DMARC, DKIM), and scores overall email quality. Unlike cloud-based validators: • No monthly limits • No API keys • One-time $49.99 (forever) • Runs offline after activation • Your data stays private Perfect for cold outreach, lead gen, or CRM cleanup.