> For the site documentation index, see [llms.txt](/llms.txt). Docs index: [llms-docs.txt](/llms-docs.txt). Marketing corpus: [llms-full.txt](/llms-full.txt). Docs corpus: [llms-full-docs.txt](/llms-full-docs.txt). Product skill: [skill.md](/skill.md). Prefer markdown URLs (append `.md`) when available.

# Reloop vs Resend

> Learn how Reloop compares to Resend and why Reloop is an open-source alternative for developer email.

HTML: https://reloop.sh/compare/resend
Markdown: https://reloop.sh/compare/resend.md
Canonical pricing: https://reloop.sh/pricing.md

Reloop is email infrastructure you can host or self-host (Apache 2.0, KumoMTA). Resend is a hosted DX layer over Amazon SES. Reloop Free is 3,000 emails/month with a 200/day cap; Pro is $10/month for 50,000 emails with no daily cap. Reloop is not a drop-in Resend proxy.

Reloop is the email service / infrastructure (ESP + MTA). It is not a multi-ESP connector that sits on SendGrid, Mailgun, Resend, or SES.

## Pricing & Email Volume

Reloop Cloud Free is 3,000 emails/month with a 200/day cap. Pro is $10/mo for 50,000 emails with no daily cap. Overage is $0.50 vs Resend's $0.90 per 1,000. Self-hosting Reloop has no Reloop license fee (you pay your own infra).

| Feature | Reloop | Resend |
| --- | --- | --- |
| Free monthly emails | 3,000 / mo | 3,000 / mo |
| Daily send limit (Free tier) | 200 / day (Free also caps at 3,000 / month) | 100 / day (Free tier limited to 100 sends/day) |
| Entry paid plan | $10 / mo (50,000 emails included) | $20 / mo (50,000 emails included (no $10 tier)) |
| 100,000 emails / mo plan | $20 / mo | $90 / mo |
| Overage rate (per 1k emails) | $0.50 / 1k | $0.90 / 1k |
| Self-hosted email sends | Unlimited (Free open-source software (own infra)) | N/A (Hosted SaaS only; pay per send) |

## Sending & Receiving

Both products support sending and receiving email. Reloop runs its own MTA/MX stack (KumoMTA, Rspamd, two-way agent inbox) and is fully self-hostable, whereas Resend is a hosted DX layer over Amazon SES with webhook-oriented inbound.

| Feature | Reloop | Resend |
| --- | --- | --- |
| Agent inbox | Yes | No |
| Inbox for humans | Yes | No |
| AI composer | Yes | No |
| Inbound spam scoring | Yes | — |
| REST API | Yes | Yes |
| SMTP relay | Yes | Yes |
| Official SDKs | Yes | Yes |
| React Email / HTML templates | Yes | Yes |
| Batch / broadcast sending | Yes | Yes |
| Scheduled delivery | Yes | Yes |
| A/B testing | No | No |
| MTA | Yes | No |
| Self-hostable | Yes | No |
| Open-source | Yes | No |
| Shared IPs | Yes | Yes |
| Dedicated IPs | 1 included (Growth) | Scale+ |

## Data & analytics

Core delivery telemetry overlaps. We only mark features Reloop implements in product today—no geolocation or client fingerprinting claims.

| Feature | Reloop | Resend |
| --- | --- | --- |
| Delivery events | Yes | Yes |
| Bounce handling | Yes | Yes |
| Complaint / spam events | Yes | Yes |
| Open tracking | Yes | Yes |
| Click tracking | Yes | Yes |
| Unsubscribe events | Yes | Yes |
| Dashboard activity / logs | Yes | Yes |
| Geolocation on opens | No | No |
| Email client analytics | No | No |

## Reliability

This section is about control plane ownership—not a promise that Reloop is faster or more available than Resend. We do not publish third-party latency benchmarks here.

| Feature | Reloop | Resend |
| --- | --- | --- |
| Direct MTA delivery (no SES hop) | Yes | No (Resend’s public sending path goes through Amazon SES) |
| Public status page | Yes (status.reloop.sh) | Yes |
| Self-host = your uptime domain | Yes (You operate the stack and SLOs) | No |

## Security

| Feature | Reloop | Resend |
| --- | --- | --- |
| SPF | Yes | Yes |
| DKIM | Yes | Yes |
| DMARC guidance / records | Yes | Yes |
| TLS options | Yes (Domain TLS: opportunistic or enforced) | Yes |
| Webhook signature verification | Yes (HMAC-SHA256 (X-Webhook-Signature)) | Yes (Svix-style signing headers) |
| Account auth | Email OTP + OAuth (Google / GitHub) | Yes |

## Platform

| Feature | Reloop | Resend |
| --- | --- | --- |
| Hosted SaaS | Yes | Yes |
| Contacts / audiences | Yes (Contacts, groups, channels) | Yes (Audiences on Resend) |
| Webhook management API | Yes | Yes |
| Agent / AI inbox product | Yes | No |
| Vendor lock-in risk | Lower (Source + self-host path; still evaluate license terms) | Higher (Hosted-only proprietary stack) |

## FAQ

### Does Reloop Free have a daily send limit?

Yes. Reloop Free includes 3,000 emails per month and 200 emails per day. Pro ($10/mo), Growth ($20/mo), and Enterprise have no daily cap. Self-hosted Reloop is limited by your own infrastructure, not Reloop Cloud quotas.

### Is Reloop a drop-in Resend API?

No. Reloop is not a Resend proxy. Plan a small client adapter when migrating. Auth uses the x-api-key header with rl_ keys.

### Is Reloop open source?

Yes. Reloop is licensed under Apache License 2.0 plus additional Reloop Labs terms: personal and internal self-host is allowed; commercial redistribution, third-party hosted services, and competing products are not. See https://reloop.sh/license. Reloop Cloud is the official hosted service.

## Related

- Pricing: https://reloop.sh/pricing.md
- Compare index: https://reloop.sh/compare.md
- License (Apache 2.0): https://reloop.sh/license