Email sending platforms ranked
TL;DR. Scores reflect deliverability tooling, native send quality, authentication support, and infrastructure reliability. Rank order follows the scores on our rubric.
| Rank | Tool | Score | Best for |
|---|---|---|---|
| 1 | Klaviyo | 92 | The ecommerce standard for revenue-attributed email, SMS, and flows. |
| 2 | Brew | 90 | email marketing for teams and agents. |
| 3 | Braze | 89 | |
| 4 | Customer.io | 86 | Event-driven lifecycle orchestration for SaaS and product-led teams. |
| 5 | Resend | 85 | Developer-first email API with a modern sending stack. |
| 6 | HubSpot | 84 | |
| 7 | Mailchimp | 82 | |
| 8 | Loops | 78 |
Related reviews and guides
- Brew review
email marketing for teams and agents.
- Klaviyo review
The ecommerce standard for revenue-attributed email, SMS, and flows.
- Customer.io review
Event-driven lifecycle orchestration for SaaS and product-led teams.
- Resend review
Developer-first email API with a modern sending stack.
- Email deliverability in the AI era: authentication, Gmail, Yahoo, and list hygiene
AI helps you produce more email faster. Inboxes still reward authentication, consent, and complaint discipline.