ConvertKit (now Kit) is an email-first platform that automates email marketing, newsletter growth, and digital product sales for creators.
Free·from $33/mo
About Kickbox
What Kickbox Does
Kickbox is an email address verification platform that checks the validity and deliverability of email addresses. It identifies deliverable, risky (disposable, role-based, accept-all), and undeliverable addresses (invalid, fake, typos). It helps businesses reduce bounce rates, protect sender reputation, and improve email campaign ROI.
Problem It Solves
Email lists decay over time, leading to high bounce rates, spam complaints, and poor deliverability. Kickbox prevents these issues by cleaning lists before sending and validating addresses at the point of capture (webforms, signup, app, POS).
Who It Is For
Kickbox suits marketers, developers, agencies, ecommerce, SaaS, and enterprises that rely on email for communication or marketing. It is not ideal for individuals who only need occasional checks (though free tools exist).
Use Cases
Real-world uses include cleaning a database before a platform migration, removing stale contacts from a newsletter list, and integrating the API into signup forms to stop fake or typo'd emails. Case studies show prevented bounces (12 million) and saved customers at signup (5% more monthly).
Key features
- Email List Verification — Bulk-clean your email lists to lower bounce rates and improve deliverability.
- Real-Time Email Verification API — Catch typos and fake emails at capture to keep your database accurate.
- Disposable Email Detection — Flag and block temporary or role-based emails (info@, sales@).
- Accept-All Domain Handling — Identify risky addresses on accept-all domains to avoid future bounces.
- GDPR-Compliant & SOC II Certified — Your data is processed securely with US and EU support.
- Free Tools — Access email verifier, spam checker, and disposable email checker for quick checks.
- Deliverability Consulting — Get expert help to improve overall email deliverability.
SaaSpartout Score
7.9
/10
Editorial score from our review methodology — not user ratings.
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Kickbox Pricing
Kickbox pricing: from $5 for 500 verifications.
For comparison: the median starting price in Marketing & SEO is $29/month, measured across 753 tools we track. See the full SaaS Pricing Index →
Free Plan
100 verifications free (no credit card required).
Pay-As-You-Go Credits
Start at $5 for 500 verifications, $10 for 1,000, $25 for 2,500, $40 for 5,000, $70 for 10,000, $150 for 25,000.
Volume Tiers
For larger needs: 50,000 ($275), 100,000 ($500), 250,000 ($1,100), 500,000 ($1,800), 750,000 ($2,400), 1,000,000 ($2,999). Custom volume discounts available for over 1M.
All accounts include: unknown results are free (refunded credits), first-class support, GDPR & SOC II compliance.
Frequently asked questions
Is Kickbox free?
Kickbox offers a free trial with 100 verifications. After that, paid plans start at $5 for 500 verifications.
How much does Kickbox cost per email verification?
Based on the smallest paid plan, cost is $0.01 per verification. Larger volume lowers the per-email cost, e.g., 1M verifications cost $2,999 (approx $0.003 each).
Who is Kickbox best for?
Kickbox is ideal for email marketers, developers, agencies, and ecommerce businesses that send high volumes of email and need to maintain deliverability.
How does Kickbox work?
Kickbox analyzes an email address's syntax, domain, and mail server responses to classify it as deliverable, risky, or undeliverable. It can be used via web interface or API.
What are the best Kickbox alternatives?
Popular alternatives include NeverBounce, ZeroBounce, and Bouncer. Each offers similar email verification services with varying features and pricing.
Does Kickbox offer a free API trial?
Yes, all new users get 100 free verifications which can be used with the API or list upload.
