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SimpleCold vs Kickbox
An honest side-by-side. Run the same list through both and compare the results row by row.
Side by side
How they compare
What matters when you choose a verifier.
| SimpleCold |  Kickbox | |
|---|---|---|
| Result categories | Deliverable, Risky, Undeliverable (Processing while a slow server answers) | deliverable, undeliverable, risky, unknown |
| Reason with each result | A statusMessage sentence on every result | A reason code on every result (for example rejected_email), plus a Sendex score |
| Catch-all addresses | Flagged Risky within the normal credit. No paid step to resolve them | Flagged accept_all and classified Risky |
| Addresses the server won't confirm | Processing first, then the final result. If the server never confirms: Risky (status no_response), one credit used | Refunded. Re-verify the address later yourself |
| Typo suggestions | Yes (suggestion) | Yes (did_you_mean) |
| API | Real-time single checks, batches of up to 50 and bulk CSV upload | Single checks and batches of up to 1 million addresses |
| Pricing model | One-off purchases from 5,000 credits, $0.005 down to $0.00125 per check. No subscription | One-off purchases by volume tier, with optional auto recharge; no subscription shown |
| 5,000 checks | $25 | $40 |
| 10,000 checks | $40 | $70 |
| 100,000 checks | $200 | $500 |
| Free to start | 200 credits on sign-up, no card | 100 free verifications |
Kickbox facts are from its own site and docs, checked 26 Oct 2026. Prices are pay-as-you-go list prices in USD before discounts. Listed prices without the temporary promo code shown on the page. Sources are listed at the bottom of the page.
Where SimpleCold differs
What you get with SimpleCold
The differences from Kickbox that hold up on paper.
A sentence, not a code
Every result carries a statusMessage in plain words. Kickbox returns a reason code such as rejected_email, plus a Sendex score.
Slow servers finish on their own
In the app and in CSV jobs a slow address shows Processing, then its final result. Kickbox refunds unknowns and asks you to re-verify later.
Lower list price at common volumes
$40 for 10,000 checks against $70 at Kickbox, and $200 against $500 for 100,000 (checked 26 Oct 2026).
Results
Three results, each with a reason
No scores to decode. Every address lands in one category and the statusMessage says what we found.
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FAQ
SimpleCold vs Kickbox
Questions people ask when comparing.
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Sources
Where the Kickbox facts come from
Each page was checked on 26 Oct 2026. Spotted something out of date? Email [email protected] and we'll fix it.
| What we checked | Source |
|---|---|
| Result categories, Reason with each result, Typo suggestions, API | docs.kickbox.com/docs/single-verification-api.md |
| Catch-all addresses, Addresses the server won't confirm | docs.kickbox.com/docs/terminology |
| Addresses the server won't confirm, Pricing model, Free to start, Prices | kickbox.com/pricing |
| API | docs.kickbox.com/docs/batch-verification-api.md |
Check your list before you send it
Start with 200 free credits. Pay per credit after that.