# Resend API (Send Email only)

Proxies Resend's Email API for sending email — no Resend API key needed. Only `POST /emails` is supported; all other endpoints are blocked.

## Prerequisites

Provision this resource before use. Edge requests without provisioning will error.

### Provision

    curl -s -X POST https://cohesivity.ai/api/resources/resend-api \
      -H "Authorization: Bearer <coh_management_key>"

### Delete

    curl -s -X DELETE https://cohesivity.ai/api/resources/resend-api \
      -H "Authorization: Bearer <coh_management_key>"

**Important:** Provision this resource now, before building or running the application. Provisioning is the agent's job, not the application's.

## Common Mistakes

- **Calling endpoints other than POST /emails.** Only `POST /emails` is supported. All other Resend paths return 403.
- **Setting a custom from address.** The `from` field is overridden — all emails are sent from `resend@cohesivity.ai`.

## Official Docs

https://resend.com/docs/api-reference/emails/send-email — read before coding.

## Edge Usage

- **Base URL:** https://cohesivity.ai/edge/resend-api
- **Auth:** `coh_application_key` as the **key** query parameter
- **Restriction:** Only `POST /emails` is allowed. Other paths return 403.
- **Auto footer:** Every email gets "Sent by user-<tenant_id> using Cohesivity." appended.
- **Sender:** All emails are sent from `resend@cohesivity.ai`. The `from` field in your request is ignored and overridden.

## Examples

- Send: `POST https://cohesivity.ai/edge/resend-api/emails?key=<coh_application_key>` with body `{ "to": ["user@example.com"], "subject": "hello", "html": "<p>hi</p>" }`