Head-to-head
Klaviyo vs Mail Tester
Two leading email marketing tools, compared on pricing, features, and editorial fit. Updated for 2026.
Mail Tester
Free email spam score and deliverability test for newsletters
From $10/mo
Visit Mail TesterAt a glance
| Klaviyo | Mail Tester | |
|---|---|---|
| Tagline | Email + SMS for ecommerce. | Free email spam score and deliverability test for newsletters |
| Pricing model | Freemium | Freemium |
| Starts at | Free | $10/mo |
| Founded | 2012 | — |
| AI-native | ||
| Categories | Email Marketing | Email Marketing |
| Vendor claimed |
Quick take
Pick Klaviyo if you need email + sms for ecommerce. Pick Mail Tester if you need free email spam score and deliverability test for newsletters.
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Frequently asked
- Is Klaviyo better than Mail Tester?
- It depends on your use case. Klaviyo is email + sms for ecommerce, while Mail Tester is free email spam score and deliverability test for newsletters. See the comparison above for which fits your team.
- What's the price difference between Klaviyo and Mail Tester?
- Klaviyo starts at Free. Mail Tester starts at $10/mo.
- Can I migrate from Klaviyo to Mail Tester?
- Most tools in this category support data import via CSV. For complex migrations, both vendors offer onboarding assistance on higher-tier plans.