Features
Email list verification Developer API Advanced reporting Enhanced Validation SDKs & Libraries MCP Server Recurring Validation Chrome Extension
Use Cases
Email Verification Bulk Email Verification Email List Cleaning Real-Time Form Validation SaaS Platforms Signup Validation Import Validation Automated List Hygiene
Integrations Pricing Docs Resources
ContactEmail Verification Comparison
Kickbox vs Mails.so
Comparing two popular email verification services to help you make an informed decision.
Kickbox
Email verification and deliverability
check Easy to use interface
check 98% claimed accuracy
check Proprietary SendEx quality score
close Vague "risky" results without enough detail to make decisions
close Costs add up quickly for larger lists
Mails.so
Modern email verification
check Modern, clean interface
check Competitive pricing
check Good for smaller lists
close Newer service with less proven track record
close Limited integration options
Key differences that set them apart
close Kickbox | close Mails.so | |
|---|---|---|
| Pricing Model | Hybrid model with monthly subscriptions or pay-as-you-go, costs add up for large lists. | Usage-based pricing with limited credits that can run out quickly for active teams. |
| Validation Speed | Fast real-time verification API, though SMTP verification can be slow with some domains. | Slower performance on larger lists compared to more established providers. |
| User Interface | User-friendly interface with proprietary SendEx quality score for each email. | Modern and aesthetic but less optimized for bulk workflow operations. |
| API and Integrations | Excellent integrations with MailChimp, HubSpot, SendGrid, Marketo, and more. | Limited native integrations - mostly API-only with basic functionality. |
| Validation Accuracy | Claims 98% accuracy but users report vague "risky" classifications. | Standard validation without advanced accuracy features for risky emails. |
Pricing comparison
Kickbox | Mails.so | |
|---|---|---|
| Validate 50k email list | $159 | $149 |
| Validate 100k email list | $300 | $229 |
| 50k API validations | $159 | $149 |
| 100k API validations | $300 | $229 |
Looking for a better alternative?
Instead of choosing between Kickbox and Mails.so, consider Truelist - the only email validation service with truly unlimited validations for a fixed monthly price.
Truelist
truelist.io
From $39
Truelist offers unlimited email validation with fixed pricing, advanced Enhanced Validation technology, and native integrations with 50+ platforms.
check Enhanced Validation with 2x more accurate results
check Truly unlimited validations
check Fixed predictable pricing - $39 starting price
check Modern, intuitive interface
check Native integrations with 50+ platforms
check Built for teams with dashboards and reporting
Ready to put Truelist
to the test?
Find out if Truelist is right for you in under 10 minutes.
Free plan available. No credit card required.