# POST /suppressions/batch/add (Resend API)
Base URL: https://api.resend.com
Auth: Authorization: Bearer <RESEND_API_KEY>
Last verified: 2026-09-03

> Add up to 100 suppressions at once

## Critical Gotchas
* All requests must include a `User-Agent` header (e.g. `User-Agent: my-app/1.0`) or the API returns HTTP 403.
* The `to` field is an array of strings, even when sending to a single recipient.

## cURL
curl -X POST 'https://api.resend.com/suppressions/batch/add' \
  -H "Authorization: Bearer $RESEND_API_KEY" \
  -H 'User-Agent: my-app/1.0' \
  -H 'Content-Type: application/json' \
  -d '{"emails":["steve.wozniak@gmail.com"]}'

## Parameters
| Name | In | Type | Required | Description |
| :--- | :--- | :--- | :--- | :--- |
| emails | body | string[] | Yes | Email addresses to suppress. |

## Response (200 OK)
{"data":[{"object":"suppression","id":"e169aa45-1ecf-4183-9955-b1499d5701d3"}]}

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