Email Verification software profile
Kickbox
Kickbox is an email verification platform with bulk list cleaning, a real-time API and an Email Threat Score that rates addresses 0 to 5 for abuse and complaint risk. Packs run from $5 for 500 to $2,999 for 1 million, with the first 100 verifications free and unknown results refunded. At high volume, some competitors list lower per-address prices.
Pros and cons
Strengths
- Small packs available: 500 verifications for $5
- First 100 verifications are free
- Unknown results are refunded
- Email Threat Score adds a 0 to 5 risk rating beyond valid/invalid
- States GDPR compliance and SOC II certification, with verification and support in the US and EU
Limitations
- Higher per-address price at volume than some rivals ($500 for 100,000 vs $400 at Bouncer)
- Credit expiry was not stated on the pricing page during our check
- Even at 1 million verifications the price ($0.003 each) is above Bouncer's ($0.002)
- Deliverability services are consulting-led rather than self-serve tools
What is Kickbox?
Kickbox is an email verification platform owned by J2 Martech Corp, a Ziff Davis company. It offers bulk list verification, a real-time verification API for signup forms, apps and point-of-sale capture, and an Email Threat Score that adds a 0 to 5 risk rating to verification results. Kickbox also sells deliverability consulting and audits.
Who should use Kickbox?
- Small, occasional jobs: packs start at 500 verifications for $5.
- Product teams protecting signups with the real-time API.
- Senders worried about abusive or high-complaint addresses, who can use the Threat Score.
Features and capabilities
- Result categories: deliverable; risky (disposable, role-based and accept-all addresses); undeliverable (invalid, fake, typos and syntax errors).
- Unknown results are free: Kickbox refunds the credit when it cannot give a definitive result.
- Email Threat Score: a 0 to 5 risk score for addresses tied to abuse, complaints or poor sending reputation.
- Compliance (vendor-stated): GDPR compliant and SOC II certified, with verification and support based in both the US and the EU.
Kickbox pricing
| Verifications | Price | Per verification |
|---|---|---|
| 100 | Free | — |
| 500 | $5 | $0.01 |
| 1,000 | $10 | $0.01 |
| 5,000 | $40 | $0.008 |
| 10,000 | $70 | $0.007 |
| 25,000 | $150 | $0.006 |
| 50,000 | $275 | $0.0055 |
| 100,000 | $500 | $0.005 |
| 250,000 | $1,100 | $0.0044 |
| 500,000 | $1,800 | $0.0036 |
| 1,000,000 | $2,999 | $0.003 |
Kickbox’s pricing page did not state whether purchased credits expire during our check, so confirm this before buying a large pack.
Ease of use and implementation
SoftPilot has not tested Kickbox hands-on. For signup protection, plan where the API call sits in your form flow and what users see when an address is rejected or flagged as risky.
Kickbox compared with close alternatives
| Tool | Smallest pack | 100,000 verifications | Extra risk signal |
|---|---|---|---|
| Kickbox | 500 for $5 | $500 | Email Threat Score (0 to 5) |
| Bouncer | 1,000 for $8 | $400 | Toxicity Check |
| ZeroBounce | 2,000 for $39 | Not verified | AI scoring (1 to 10) |
Should you shortlist Kickbox?
Shortlist Kickbox if you need small packs, a real-time API for signups, or a risk score for addresses linked to abuse and complaints.
Look elsewhere if you verify at high volume and want the lowest per-address price: Bouncer’s 100,000 pack was $100 cheaper on 20 Oct 2026.
Kickbox FAQs
Is Kickbox free to try?
Yes. Your first 100 verifications are free.
Does Kickbox charge for unknown results?
No. Kickbox refunds the credit when it cannot provide a definitive result.
Who owns Kickbox?
Kickbox’s site names J2 Martech Corp, a Ziff Davis company.
Sources and methodology
This profile is desk research: SoftPilot has not tested this product hands-on. Facts come from the sources below, checked on the dates shown. Prices, plans and limits change often; confirm on the vendor's site before you buy. How we research software.
- Kickbox pricing accessed 20 Oct 2026
- Kickbox homepage (products, Threat Score, ownership) accessed 20 Oct 2026
- Bouncer pricing accessed 20 Oct 2026
- ZeroBounce pricing accessed 20 Oct 2026
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