# Resend

> Transactional email API for developers.

- **Category**: transactional-email
- **Éditeur** : Resend
- **Site** : https://resend.com
- **Pricing model**: freemium_per_email
- **Rubrique** : v0.2.0

Modern email API, popular with the new generation of developer tools. Its API surface is deliberately small.

## Surfaces evaluated

### Resend API (REST) `resend-rest-v1`

- **Type** : rest
- **Version** : v1
- **Base URL** : https://api.resend.com
- **Documentation** : https://resend.com/docs/api-reference/introduction
- **Authentification** : bearer_static

**Statut de notation** : `scored`

Complete benchmark. `overall` is a weighted average of the applicable criteria, comparable to other surfaces in the same category and the same rubric version.

**Overall score**: 76.4 / 100
**Coverage**: 98 %
**Measured**: 2026-09-21 (oldest measurement still counted)

| Criterion | Weight | Score |
| --- | --- | --- |
| Auth Friction | 10 | 95 |
| Offload Value | 15 | 92 |
| Doc Legibility | 12 | 54 |
| Task Atomicity | 6 | 100 |
| Interaction Cost | 15 | 100 |
| Payload Efficiency | 8 | 63 |
| Async Compatibility | 2 | 100 |
| Error Recoverability | 15 | 42 |
| Safety & Reversibility | 10 | 58 |
| Prior Knowledge Coverage | 5 | 100 |

## Methodology

Scores are derived from real runs and probes, never from reviews. A missing criterion is excluded from the computation and the weights are renormalised — it is never counted as a zero.

- Full rubric: https://agentsco.re/api/v1/rubric
- Methodology: https://agentsco.re/methodology
- Cette fiche en JSON : https://agentsco.re/api/v1/tools/resend