---
title: "Add to suppression list"
method: POST
path: "/tenants/{tenantId}/suppressions"
tags: ["Suppressions"]
---

# Add to suppression list

`POST /tenants/{tenantId}/suppressions`

Add an email address to the tenant's suppression list. The address will
not receive any emails from this tenant until removed.

## Path parameters

- `tenantId` string, required

## Request body

- object
  - `address` string, email, required — Email address to suppress
  - `reason` string, nullable — Reason for suppression (accepts null)

## Response `201`

Address suppressed

- SuppressionResponse
  - `success` true, required
  - `data` object, required
    - `id` string, required — Suppression ID
    - `address` string, email, required
    - `reason` string — Reason for suppression
    - `createdAt` string, date-time, required
  - `meta` ApiMeta, required
    - `requestId` string, required — Unique request identifier for debugging and support

## Other responses

- `400` — Invalid request parameters
- `401` — Invalid or missing API key
- `404` — Tenant not found
- `429` — Rate limit exceeded
- `500` — Internal server error

---

[API](https://skmtc.net/arkhq-io/apis/ark-email-api.md) · [All operations](https://skmtc.net/arkhq-io/apis/ark-email-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/arkhq-io/ark-email-api/revisions/98a90852ffca/schema)