---
title: "Changes to POST /v1/emails/batch"
method: POST
path: "/v1/emails/batch"
---

# Changes to POST /v1/emails/batch

`POST /v1/emails/batch`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 7 of 27 revisions.

- **2025-11-17** `d5dbb8522d58`: 1 info
- **2025-09-28** `b78e8de12151`: 1 info
- **2025-09-26** `f3f4be68abf8`: 3 breaking, 3 info
- **2025-06-01** `80d7f1c84475`: 1 breaking, 2 info
- **2025-05-25** `df13b10684f7`: 1 info
- **2025-04-19** `078f534faefa`: 1 info
- **2024-05-21** `ad91eadfd8ee`: 1 breaking

## Changes

- **2025-11-17** `d5dbb8522d58`: 1 info
  - added the new optional `header` request parameter `Idempotency-Key`
- **2025-09-28** `b78e8de12151`: 1 info
  - added the new optional request property `items/headers`
- **2025-09-26** `f3f4be68abf8`: 3 breaking, 3 info
  - removed `subschema #1, subschema #2` from the `items/bcc` request property `anyOf` list
  - removed `subschema #1, subschema #2` from the `items/cc` request property `anyOf` list
  - removed `subschema #1, subschema #2` from the `items/replyTo` request property `anyOf` list
  - added `subschema #1, subschema #2` to the `items/bcc` request property `anyOf` list
  - added `subschema #1, subschema #2` to the `items/cc` request property `anyOf` list
  - added `subschema #1, subschema #2` to the `items/replyTo` request property `anyOf` list
- **2025-06-01** `80d7f1c84475`: 1 breaking, 2 info
  - removed `subschema #1, subschema #2` from the `items/to` request property `anyOf` list
  - added `subschema #1, subschema #2` to the `items/to` request property `anyOf` list
  - the `items/from` request property format was generalized from `email` to no format
- **2025-05-25** `df13b10684f7`: 1 info
  - added the new optional request property `items/inReplyToId`
- **2025-04-19** `078f534faefa`: 1 info
  - endpoint added
- **2024-05-21** `ad91eadfd8ee`: 1 breaking
  - api path removed without deprecation

---

[Operation](https://skmtc.dev/usesend/apis/usesend-api/docs/v1/emails/batch/post.md) - [API](https://skmtc.dev/usesend/apis/usesend-api.md) - [Page](https://skmtc.dev/usesend/apis/usesend-api/changes/v1/emails/batch/post)