Kickbox: $10/1K, Black-Box Score.
BounceZero: $3/1K, AI Explanations.
Kickbox gives you a "Sendex score" with no explanation of how it was calculated. BounceZero tells you exactly why each email scored the way it did — with per-email SPF/DKIM/DMARC, breach database checks, and social profile signals. At 3× lower cost.
The Problem with Kickbox's Sendex Score
Kickbox returns a "Sendex" score from 0 to 100 — but never explains what factors contributed to that score. When an email scores 65, you don't know if it's because the domain is suspicious, the mailbox hasn't been confirmed, or the address pattern looks unusual. BounceZero shows you exactly why. Every verification includes an AI-generated explanation: "This email scored 82 because SPF and DKIM pass, SMTP confirmed the mailbox exists, but no social profile was found, slightly reducing confidence."
Kickbox vs. BounceZero
| Feature | Kickbox | BounceZero |
|---|---|---|
| Syntax Check | ||
| MX Lookup | ||
| SMTP Verification | ||
| Disposable Detection | ||
| Catch-All Detection | ||
| Price per 1,000 emails | $10.00 | $3.00 |
| Score Explanation (AI) | ||
| Per-Email SPF/DKIM/DMARC | ||
| BIMI / MTA-STS / DANE | ||
| Breach Database Check | ||
| Social Profile Detection | ||
| ML Blended Scoring | ||
| Domain Intelligence API | ||
| Certificate Transparency | ||
| Credits Never Expire |
Common Questions
Stop Paying 3× More for Less Insight
100 free credits. No card. AI explanations from your very first verification.
Switch to BounceZero Free →