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Same API behind all the free tools. Start free, upgrade when you need more volume. No external cost on our side means the free tier is real.
Email (syntax, disposable/role detection, typo suggestion, live MX deliverability), phone (E.164 + country, 35+ countries), card (Luhn + brand), and SEO/readability text analysis. One JSON call each, CORS enabled.
Need a custom/volume plan? Email cchkjjdobby@gmail.com.