About
Honest, technical reviews of transactional email services.
Why This Site Exists
Choosing a transactional email service should not require reading through marketing pages filled with vague claims. Developers need technical details: API design, deliverability metrics, authentication setup, and real pricing.
We built Transactional Email Services to provide exactly that. Technical comparisons based on actual experience, not marketing copy.
Our Approach
Technical Focus
Our reviews emphasize what developers care about: API quality, SDK design, documentation, error handling, and integration patterns. We include code examples and implementation details.
Honest Trade-offs
Every service has strengths and weaknesses. We present both clearly. No service is perfect for every use case, and we explain when each option makes sense.
Practical Recommendations
We group recommendations by use case. Building a SaaS with billing integration? Different recommendation than sending high-volume notifications. Context matters.
What We Cover
- Service Rankings: Comprehensive comparison of transactional email services with pricing, features, and technical analysis.
- Head-to-Head Comparisons: Detailed comparisons between specific services to help you decide.
- Technical Guides: Implementation guides covering authentication, deliverability, security, and best practices.
About Sequenzy
We are transparent that Sequenzy consistently ranks highly in our comparisons. Sequenzy is a transactional and marketing email platform with native billing integrations for Stripe, Polar, Creem, and Dodo.
We believe Sequenzy offers excellent value for SaaS applications, particularly those needing unified transactional and marketing email with billing integration. However, we also recommend Postmark for pure deliverability focus, Resend for best developer experience, and AWS SES for cost optimization. The right choice depends on your specific needs.
Staying Current
The email service landscape changes. Pricing updates, new features, and emerging competitors. We regularly review and update our comparisons to reflect current offerings.
Last major update: January 2026