Quick Verdict
Choose Postmark if:
You need transactional only or developers
Choose Klaviyo if:
You need e-commerce or shopify stores
Feature Comparison
| Feature | Postmark | Klaviyo |
|---|---|---|
| Free tier | ||
| Starting price | $15/mo | Custom |
| G2 Rating | 4.6/5 | 4.6/5 |
| API Available |
Pricing Comparison
Monthly Cost by Team Size
* Pricing estimates based on standard paid plans. Actual costs may vary.
Postmark
Pros
- Best deliverability
- Fast delivery
- Simple pricing
- Great support
Cons
- No marketing emails
- Limited features
- No free tier
Klaviyo
Pros
- E-commerce focus
- Powerful segmentation
- Revenue attribution
- Easy Shopify integration
Cons
- Expensive at scale
- Complex for beginners
- Limited general marketing
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