Looking for a reliable DeBounce replacement with budget-friendly pricing, instant self-serve signup, and a clean developer API? KaijuVerifier gives you 7-Layer Smart SMTP verification, $0 Unknowns, and Multi-Sheet .XLSX support starting at $19.
Slide to your monthly email verification volume to see your exact savings:
| Feature / Metric | ⚡ KaijuVerifier | DeBounce |
|---|---|---|
| 10,000 Verifications | $19 / mo (or $19 for 5k Non-Expiring Pack) | $30 (Closed to new signups) |
| 50,000 Verifications | $49 / mo | $90 (Closed to new signups) |
| 250,000 Verifications | $149 / mo | $300 |
| Recurring Free Tier | ✅ 100 / month forever (Full Smart SMTP) | Unavailable for new accounts |
| Unknown / Greylisted Billing | ✅ $0 (100% Free — never deducted) | ✅ Refunded |
Multi-Sheet Excel (.XLSX) |
✅ Native Multi-Tab Upload & Export | ❌ CSV / single-sheet only |
| Unused Credit Rollover | ✅ Monthly Rollover + Never-Expiring Packs | ✅ Non-expiring packs |
| Disposable Email Registry | ✅ 1,000,000+ domains updated daily | ~150,000 domains |
| Pre-DNS Consumer Typo Guard | ✅ Auto-suggests gmial.com → gmail.com ($0 cost) |
⚠️ Basic syntax only |
| Included Free Deliverability Suite | ✅ B2B Email Finder + 360° SPF/DKIM/DMARC/DNSBL Audit | ❌ Paid add-on or not included |
Legacy DeBounce accounts with leftover grandfathered credits can finish spending their existing balance before migrating.
For 95% of SaaS products, growth agencies, cold outreach teams, and e-commerce stores, KaijuVerifier delivers identical 99%+ SMTP accuracy at up to 52% lower cost.
Read our in-depth editorial breakdown →Instant client-side pre-scan (0 credits) + live 5-email Smart SMTP sample check before you even sign up.
Compare our real-time latency, composite 0–100 score, and catch-all/typo detection against DeBounce — free and without signup:
KaijuVerifier is the closest drop-in replacement for DeBounce, combining non-expiring Pay-As-You-Go credit packs (starting at $19), $0 billing on Unknown/Catch-All timeouts, a fast REST API, and Multi-Sheet Excel (.xlsx) support.
Under 5 minutes. Point your HTTP request to POST https://kaijuverifier.com/api/v1/verify with your Bearer API key and read the status, score, and is_disposable fields.