---
title: "List project recipient suppressions"
method: GET
path: "/mailboxes/v1/suppressions"
tags: ["Mailboxes"]
---

# List project recipient suppressions

`GET /mailboxes/v1/suppressions`

## Request

- Base URL: `https://api.run402.com`
- URL: `https://api.run402.com/mailboxes/v1/suppressions`
- Auth: HTTP bearer

Lists project-scoped suppressed recipients for the authenticated project. Global suppressions are admin-only and are not returned here.

## Response `200`

Project suppressions

- object
  - `suppressions` MailboxSuppression[]
    - `email_address` string, email
    - `reason` string
    - `scope` 'project'
    - `project_id` string: Run402 project ID. Public IDs are not UUIDs.
    - `created_at` string, date-time

## Other responses

- `401`: Missing or invalid authentication. Run402-originated JSON bodies use the canonical ErrorEnvelope.

---

[API](https://skmtc.dev/run402/apis/run402-api.md) · [All operations](https://skmtc.dev/run402/apis/run402-api/llms.txt) · [OpenAPI document](https://skmtc.dev/run402/apis/run402-api/revisions/893607557f50?raw)