Reloop vs Resend
Resend set a new bar for developer email APIs. This page explains where the products overlap—and where Reloop offers a different path.
If you ship SaaS or internal tools, you have probably seen Resend in tutorials, starter kits, and framework guides. The product is intentionally narrow: a hosted API for sending email with a polished dashboard and strong docs. That focus is a strength.
Reloop targets a different decision: teams that want the same developer ergonomics but also need ownership of the stack—open source, optional self-hosting, campaigns, SMTP, and agent workflows without adding more vendors.
Where Resend fits well
Fast path to hosted transactional.
- You want a hosted-only product with minimal operational surface area and no interest in running infrastructure.
- Your sends are almost entirely transactional—password resets, receipts, notifications—and you do not need a campaign builder.
- You are already deep in the React Email ecosystem and happy to stay on a proprietary hosted renderer.
Where Reloop is different
Platform + deployment choice.
- Apache 2.0 source—you can read how routing, quotas, and webhooks are implemented instead of trusting a black box.
- Self-host on your network or use Reloop hosted; same product, your choice of where data lives.
- Campaigns, SMTP relay, analytics, and agent inbox live beside transactional sends—no second vendor for marketing or AI workflows.
Side-by-side
Infrastructure and product capabilities—not marketing slogans.
| Feature | Reloop | Resend |
|---|---|---|
| Open-source codebase | Yes (Apache 2.0) | — |
| Self-hostable | — | |
| Hosted SaaS | ||
| Transactional REST API | ||
| Marketing campaigns | Limited | |
| SMTP relay | ||
| Webhooks & delivery events | ||
| Agent inbox / AI workflows | — | |
| Free tier (monthly) | 3,000 emails | 3,000 emails |
| Typical Pro entry | $19 / month (50k sends) | ~$20 / month (50k sends) |
Migrating from Resend
Most teams keep their template rendering and swap the transport layer.
1. Stand up Reloop
Sign up for hosted Reloop or deploy from the open-source repo. Create an API key and add your sending domain.
2. Keep your templates
Continue rendering React Email (or any HTML generator) in your app. Reloop accepts the rendered HTML—no requirement to rebuild templates inside our editor.
3. Swap the client
Replace Resend SDK calls with the Reloop SDK. Payloads forfrom,to, subject, and HTML map cleanly.
4. Cut over webhooks
Point delivery and bounce webhooks to your existing handlers. Run parallel sends in staging before flipping production traffic.
See Reloop pricing and the self-hosting guide if you are evaluating deployment options.
FAQ
Resend vs Reloop FAQ
No—Reloop has its own REST API and SDKs. Migration is usually a small client swap for standard send payloads, not a drop-in proxy.
Yes. Render templates in your application and pass HTML to Reloop. Many Resend teams already do this; only the transport call changes.
Teams that want hosted-only transactional email with zero ops burden and no need for campaigns, self-hosting, or source access.
Teams hitting limits around vendor lock-in, data residency, marketing sends, or AI/agent email workflows—or anyone who wants to read the code.
More comparisons