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01 Getting Started Create an account, run your first check, read a result. 8 articles → 02 Understanding Results Verdicts, scores, and the signals behind them. 11 articles → 03 Bulk Validation Uploads, CSV formatting, and large list runs. 9 articles → 04 API Keys, endpoints, webhooks, and rate limits. 14 articles → 05 Billing Credits, invoices, plans, and receipts. 6 articles →

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6 articles
What does Risky mean? Understanding Results · 3 min read Accept-all and Unknown explained Understanding Results · 5 min read Formatting your CSV Bulk Validation · 4 min read Using the API API · 6 min read How credits are counted Billing · 3 min read Your first validation, start to finish Getting Started · 4 min read
Talk to support Every message reaches a human on the team. Deliverability guide What each verdict means, and how clean lists protect your sender reputation. API reference Endpoints, response fields, rate limits, and code samples.