Head-to-head · Email APIs
Brevo Transactional Email vs OpenSend
Brevo Transactional Email leads on 2 checks, OpenSend on 1, and 5 are even. Who comes out ahead on the 8 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.
Our verdict
- Highest scoreBrevo Transactional Email · 7.6/10
- Lowest starting priceBrevo Transactional Email · $9/mo
- Free planboth
- Most featuresBrevo Transactional Email · 5 of 5
Brevo Transactional Email scores higher on our rubric for email apis: 7.6 against 6.8 out of 10; our editors rank them #13 and #19.
Brevo Transactional Email is cheaper to start at $9/mo against $10/mo. OpenSend leads on monthly send limit: 15000 /mo versus 5000 /mo. Brevo Transactional Email offers smtp relay; OpenSend doesn't.
Brevo Transactional Email is the better fit for teams needing affordable transactional email. OpenSend is the better fit for open-source teams wanting a modern email stack.
- Brevo Transactional Email fits best
Teams needing affordable transactional email
- OpenSend fits best
Open-source teams wanting a modern email stack
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Side by side
| Feature | Brevo Transactional Email 7.6/10 Visit ↗ | OpenSend 6.8/10 Visit ↗ |
|---|---|---|
| At a glance | ||
| Editor score | 7.6 | 6.8 |
| Ranking | #13 in Email APIs | #19 in Email APIs |
| Best for | Teams needing affordable transactional email | Open-source teams wanting a modern email stack |
| Pricing model | Free plan + paid | Free plan + paid |
| Starting price | $9/mo (best) | $10/mo |
| Free plan | ✓ | ✓ |
| Free trial | — | — |
| Deployment | Cloud | Cloud, Self-hosted |
| Platforms | Web | Web |
| Features Brevo Transactional Email 5/5 · OpenSend 4/5 | ||
| Inbound email | ✓ | ✓ |
| Delivery event webhooks | ✓ | ✓ |
| SMTP relay | ✓ (best) | — |
| Email templates | ✓ | ✓ |
| Dedicated IP option | ✓ | ✓ |
| Specs | ||
| Monthly send limit | 5000 /mo | 15000 /mo (best) |
| Our review | ||
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| Our verdict | Brevo Transactional Email sends automated, one-to-one messages for applications and websites. It suits teams that need transactional delivery through either a REST API or SMTP relay, with reusable templates, personalization, attachments,… Read the review → |
OpenSend is email infrastructure for developers and teams managing transactional email, broadcasts, contacts, templates, automations, inbound messages, and delivery events. It supports web access, an API, and self-hosted deployment. Its… Read the review → |
Strengths and trade-offs
Brevo Transactional Email — where it wins
- Permanent free plan with 300 daily email sends
- REST API, SMTP relay, templates, personalization, and attachments
- Inbound parsing plus delivery, bounce, complaint, open, and click webhooks
Where it doesn't
- Free plan has a 300-send daily limit
- Dedicated IP is an add-on on Professional
- Enterprise pricing and sending volumes are custom
OpenSend — where it wins
- Self-hosting with Docker Compose, AWS SES, and Postgres
- Resend-compatible REST API with TypeScript SDK and React Email support
- Webhooks, inbound routes, automations, templates, and domain authentication
Where it doesn't
- SMTP relay is not supplied
- Self-hosting requires AWS SES and Postgres
- The Free plan allows 500 API and broadcast emails monthly
- Brevo Transactional Email7.6/10 · Free plan
Affordable transactional email with API, SMTP, templates, scheduling, and event webhooks.
Visit BrevoFull verdict → - OpenSend6.8/10 · Free plan
A flexible email stack for developers, with self-hosting and a Resend-compatible API.
Visit OpenSendFull verdict →
All email APIs comparisons → · Full ranking →
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update