Feature Comparison
Pricing Comparison
Kickbox starts at $5 for 500 credits ($0.01/email). SendSure starts at $5 for 1,000 credits ($0.005/email) — 2x the credits at the same price.
Why teams switch to SendSure
Better value
SendSure gives 1,000 credits for $5. Kickbox gives 500 credits for $5. That's 2x the verifications at the same price point.
Independent platform
Kickbox is owned by Validity (which also owns Return Path and BriteVerify). SendSure is independent with no conflicts of interest from parent company data products.
Deeper verification
SendSure's 27-stage engine with AI catch-all resolution goes beyond Kickbox's standard SMTP-based verification approach.
Frequently Asked Questions
How does Kickbox compare to SendSure?
Kickbox is a solid verification tool, especially for enterprise customers. SendSure offers deeper verification (27 stages vs standard SMTP), better pricing (2x credits per dollar), and more features (blacklist monitoring, GDPR tools, form widget).
What is Sendex scoring?
Sendex is Kickbox's proprietary quality score. SendSure provides a similar quality_score (0-1) plus risk_band and detailed reason_codes for more granular risk assessment.