---
title: "Changes to Estimate Postcard"
method: POST
path: "/estimate/postcard"
---

# Changes to Estimate Postcard

`POST /estimate/postcard`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 9 of 51 revisions.

- **2026-10-19** `c403fbf3dc0f`: 1 info
- **2026-10-15** `4e41e9041848`: 1 warning, 1 info
- **2026-10-09** `9b6aa91faff7`: 1 info
- **2026-10-09** `c76fc453c7ca`: 1 warning
- **2026-10-07** `aaf5a075a328`: 1 info
- **2026-10-03** `1c7f08ab8dcd`: 1 warning, 4 info
- **2026-10-03** `91e51cdec675`: 7 info
- **2026-10-01** `02de08ab2a47`: 1 warning
- **2026-09-28** `f2de8d244db2`: 1 info

## Changes

- **2026-10-19** `c403fbf3dc0f`: 1 info
  - added the new optional request property `allOf[#/components/schemas/send-mailer-base]/email_lookup`
- **2026-10-15** `4e41e9041848`: 1 warning, 1 info
  - removed the request property `allOf[#/components/schemas/send-mailer-base]/send_standard_mail`
  - added the new optional request property `allOf[#/components/schemas/send-mailer-base]/postage_class`
- **2026-10-09** `9b6aa91faff7`: 1 info
  - added the new optional request property `allOf[subschema #2]/creative_id`
- **2026-10-09** `c76fc453c7ca`: 1 warning
  - removed the request property `allOf[subschema #2]/creative_id`
- **2026-10-07** `aaf5a075a328`: 1 info
  - added the new optional request property `allOf[subschema #2]/creative_id`
- **2026-10-03** `1c7f08ab8dcd`: 1 warning, 4 info
  - removed the request property `allOf[#/components/schemas/send-mailer-base]/recipients/items/absentee_street`
  - added the new optional request property `allOf[#/components/schemas/send-mailer-base]/recipients/items/absentee_address`
  - added the new optional request property `allOf[#/components/schemas/send-mailer-base]/recipients/items/absentee_city`
  - added the new optional request property `allOf[#/components/schemas/send-mailer-base]/recipients/items/absentee_postal_code`
  - added the new optional request property `allOf[#/components/schemas/send-mailer-base]/recipients/items/absentee_province`
- **2026-10-03** `91e51cdec675`: 7 info
  - added the new optional request property `allOf[#/components/schemas/send-mailer-base]/recipients/items/absentee_street`
  - added the new optional request property `allOf[#/components/schemas/send-mailer-base]/recipients/items/custom10`
  - added the new optional request property `allOf[#/components/schemas/send-mailer-base]/recipients/items/custom5`
  - added the new optional request property `allOf[#/components/schemas/send-mailer-base]/recipients/items/custom6`
  - added the new optional request property `allOf[#/components/schemas/send-mailer-base]/recipients/items/custom7`
  - added the new optional request property `allOf[#/components/schemas/send-mailer-base]/recipients/items/custom8`
  - added the new optional request property `allOf[#/components/schemas/send-mailer-base]/recipients/items/custom9`
- **2026-10-01** `02de08ab2a47`: 1 warning
  - added the new `postcard6x9` enum value to the `data/type` response property for the response status `200`
- **2026-09-28** `f2de8d244db2`: 1 info
  - endpoint added

---

[Operation](https://skmtc.dev/thanks-io/apis/thanks-io-api/docs/estimate/postcard/post.md) · [API](https://skmtc.dev/thanks-io/apis/thanks-io-api.md) · [Page](https://skmtc.dev/thanks-io/apis/thanks-io-api/changes/estimate/postcard/post)