---
title: "Create Mailing List"
method: POST
path: "/print-mail/v1/mailing_lists"
tags: ["Mailing Lists"]
---

# Create Mailing List

`POST /print-mail/v1/mailing_lists`

Create a new mailing list.

## Headers

- `idempotency-key` string

## Request body

- MailingListCreate — Parameters for creating a new mailing list.
  - `description` string — An optional string describing this resource. Will be visible in the API and the dashboard.
  - `metadata` object — See the section on Metadata.

## Response `201`

The newly created mailing list.

- MailingList — Represents a mailing list.
  - `id` string, required — A unique ID prefixed with mailing_list_
  - `description` string — An optional string describing this resource. Will be visible in the API and the dashboard.
  - `metadata` object — See the section on Metadata.
  - `live` boolean, required — `true` if this is a live mode resource else `false`.
  - `createdAt` string, date-time, required — The UTC time at which this resource was created.
  - `updatedAt` string, date-time, required — The UTC time at which this resource was last updated.
  - `status` 'creating_contacts' | 'removing_contacts' | 'counting_recipient_country_codes' | 'completed', required — Status of the mailing list processing.
  - `errors` ProcessError[] — A list of processing errors encountered, if any.
    - `type` 'mailing_list_imports_not_found_error' | 'download_file_error' | 'operational_error' | 'internal_service_error', required — Type of error encountered during mailing list processing.
    - `message` string, required — A human-readable message describing the error.

## Other responses

- `400` — The newly created mailing list.
- `401` — The newly created mailing list.
- `404` — The newly created mailing list.
- `422` — The newly created mailing list.
- `429` — The newly created mailing list.
- `500` — The newly created mailing list.

## Changes

- **2026-05-01** `c8fedcbd705e` — 4 warning, 2 info
  - added the new `internal_server_error` enum value to the `error/type` response property for the response status `500`
  - added the new `not_found_error` enum value to the `error/type` response property for the response status `404`
  - added the new `rate_limit_exceeded_error` enum value to the `error/type` response property for the response status `429`
  - added the new `validation_error` enum value to the `error/type` response property for the response status `400`
  - …2 more

[Change history](https://skmtc.dev/postgrid/apis/postgrid-address-verification-api/changes/print-mail/v1/mailing_lists/post.md)

---

[API](https://skmtc.dev/postgrid/apis/postgrid-address-verification-api.md) · [All operations](https://skmtc.dev/postgrid/apis/postgrid-address-verification-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/postgrid/postgrid-address-verification-api/revisions/537d2bbc624a/schema)