Email Risk Radar vs Kickbox
Kickbox is an established email verification API known for its Sendex reputation score and a pricing model where only definitive results consume credits. kickbox.com isn't consistently reachable to confirm directly, so the details below are sourced from third-party pricing and review sites — treat them as directional, not authoritative, and confirm directly with Kickbox before deciding. Email Risk Radar covers comparable core verification and adds a fully explainable, context-aware risk score with a named signal behind every point.
What Kickbox does
Kickbox is an established email verification provider, notable for the Sendex score — a proprietary email reputation score it's publicly known for — and a billing model where, per multiple third-party sources, only definitive results (not "risky" or "unknown" outcomes) consume credits.
Pricing (third-party sourced, last checked 2026-08-17 — not independently confirmed on kickbox.com)
| Plan | Price | Details |
|---|---|---|
| Pay-as-you-go (entry) | ~$5 / 500 verifications | ~$0.01/email — third-party sourced |
| Pay-as-you-go (volume) | As low as ~$0.004/email | At 250,000+ verifications — third-party sourced |
| Credit expiry | Reported as 12 months | Third-party sourced, not independently confirmed |
Feature comparison
| Feature | Email Risk Radar | Kickbox |
|---|---|---|
| Syntax / MX / SMTP-based verification | Yes | Widely documented as a core feature across third-party sources; not independently confirmed on kickbox.com this pass |
| Disposable / role-based detection | Yes | Widely documented as a core feature; not independently confirmed on kickbox.com this pass |
| Proprietary reputation score (Sendex) | N/A — different model entirely | Publicly known feature; exact methodology not publicly documented |
| Only charges for definitive results | N/A — quota-based plans, not per-result credits | Reported by third-party sources as a Kickbox billing feature — not independently confirmed |
| Address-level risk score with confidence + named signals | Yes | Not publicly documented in this form |
| Context-aware scoring (signup / B2B lead / marketplace / payment) | Yes | Not publicly documented |
| Local-part shape analysis (entropy, keyboard patterns, generated-address detection) | Yes | Not publicly documented |
| Bulk + real-time API | Yes | Widely documented as a core feature |
Where the products likely differ
Kickbox's Sendex score is a well-known differentiator in the category, but its exact calculation isn't publicly documented in detail — it's presented as a proprietary reputation indicator rather than a transparent, per-signal breakdown. Email Risk Radar takes the opposite approach on transparency specifically: every point of the score is traceable to a named signal (a specific weight, a severity, a plain-language description), and the weighting changes based on a context you set per use case, which isn't part of Kickbox's documented positioning.
Who each is a better fit for
- Kickbox: teams comfortable with a reputation-score model and a pay-only-for-definitive-results billing approach, primarily for list verification
- Email Risk Radar: developers who want to see and act on the exact reasoning behind every score, with scoring that adapts to signup, lead-gen, or transactional use cases specifically
FAQ
Kickbox's own site isn't consistently reachable to confirm directly, so pricing and some feature claims rely on third-party sources rather than Kickbox's own site. That limitation is disclosed explicitly rather than presented as directly verified.
It's Kickbox's publicly known proprietary email reputation score. Its exact calculation methodology isn't publicly documented from an official source.
That's reported consistently across multiple third-party sources, but it isn't independently confirmed against Kickbox's own site — verify directly before relying on it.
Not directly — it uses a 0–100 risk score built from named, weighted signals rather than a single proprietary reputation number, with the full breakdown returned in every response.