---
title: "Changes to Add a domain"
method: POST
path: "/domains"
---

# Changes to Add a domain

`POST /domains`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 2 of 7 revisions.

- **2026-09-30** `4dc1e20989c8`: 18 warning
- **2026-09-29** `ef5b22b98333`: 2 breaking, 1 warning, 12 info

## Changes

- **2026-09-30** `4dc1e20989c8`: 18 warning
  - added the new `daily_limit_exceeded` enum value to the `anyOf[#/components/schemas/Error]/code` response property for the response status `403`
  - added the new `daily_limit_exceeded` enum value to the `code` response property for the response status `400`
  - added the new `daily_limit_exceeded` enum value to the `code` response property for the response status `401`
  - added the new `daily_limit_exceeded` enum value to the `code` response property for the response status `409`
  - added the new `daily_limit_exceeded` enum value to the `code` response property for the response status `422`
  - added the new `daily_limit_exceeded` enum value to the `code` response property for the response status `429`
  - added the new `monthly_limit_exceeded` enum value to the `anyOf[#/components/schemas/Error]/code` response property for the response status `403`
  - added the new `monthly_limit_exceeded` enum value to the `code` response property for the response status `400`
  - added the new `monthly_limit_exceeded` enum value to the `code` response property for the response status `401`
  - added the new `monthly_limit_exceeded` enum value to the `code` response property for the response status `409`
  - added the new `monthly_limit_exceeded` enum value to the `code` response property for the response status `422`
  - added the new `monthly_limit_exceeded` enum value to the `code` response property for the response status `429`
  - added the new `send_limit_exceeded` enum value to the `anyOf[#/components/schemas/Error]/code` response property for the response status `403`
  - added the new `send_limit_exceeded` enum value to the `code` response property for the response status `400`
  - added the new `send_limit_exceeded` enum value to the `code` response property for the response status `401`
  - added the new `send_limit_exceeded` enum value to the `code` response property for the response status `409`
  - added the new `send_limit_exceeded` enum value to the `code` response property for the response status `422`
  - added the new `send_limit_exceeded` enum value to the `code` response property for the response status `429`
- **2026-09-29** `ef5b22b98333`: 2 breaking, 1 warning, 12 info
  - the `name` request property's minLength was increased from `0` to `1`
  - removed the success response with the status `200`
  - the `name` request property's maxLength was set to `253`
  - added the new optional request property `custom_return_path`
  - the `click_tracking` request property default value `false` was removed
  - the `open_tracking` request property default value `false` was removed
  - the `region` request property default value `eu-west-1` was removed
  - the `tls_mode` request property default value `opportunistic` was removed
  - added the non-success response with the status `400`
  - added the non-success response with the status `401`
  - added the non-success response with the status `403`
  - added the non-success response with the status `409`
  - added the non-success response with the status `422`
  - added the non-success response with the status `429`
  - added the success response with the status `201`

---

[Operation](https://skmtc.dev/poststack/apis/poststack-api/docs/domains/post.md) - [API](https://skmtc.dev/poststack/apis/poststack-api.md) - [Page](https://skmtc.dev/poststack/apis/poststack-api/changes/domains/post)