--- title: "Changes to Send multiple emails" method: POST path: "/emails/batch" --- # Changes to Send multiple emails `POST /emails/batch` > Every recorded change to this endpoint, newest first. ## Timeline Changed in 10 of 49 revisions. - **2026-02-18** `e38e03901deb` — 3 warning - **2026-02-05** `37bce0c9a4d7` — 6 warning, 6 info - **2026-02-04** `4f8eeb0b9933` — 276 warning - **2026-02-02** `13bda63d06ce` — 1 breaking - **2026-01-30** `65d92724dca2` — 1 info - **2026-01-30** `39b91ffd46b6` — 1 breaking - **2026-01-30** `65d92724dca2` — 1 info - **2026-01-30** `bf0351a8fa1d` — 1 breaking - **2026-01-23** `c7a958bca791` — 6 info - **2026-01-21** `34d225476c98` — 1 info ## Changes - **2026-02-18** `e38e03901deb` — 3 warning - the optional response header `X-RateLimit-Limit` removed for the status `429` - the optional response header `X-RateLimit-Remaining` removed for the status `429` - the optional response header `X-RateLimit-Reset` removed for the status `429` - **2026-02-05** `37bce0c9a4d7` — 6 warning, 6 info - added the new `infrastructure_error` enum value to the `error/code` response property for the response status `400` - added the new `infrastructure_error` enum value to the `error/code` response property for the response status `401` - added the new `infrastructure_error` enum value to the `error/code` response property for the response status `402` - added the new `infrastructure_error` enum value to the `error/code` response property for the response status `409` - added the new `infrastructure_error` enum value to the `error/code` response property for the response status `429` - added the new `infrastructure_error` enum value to the `error/code` response property for the response status `500` - removed the `postal_error` enum value from the `error/code` response property for the response status `400` - removed the `postal_error` enum value from the `error/code` response property for the response status `401` - removed the `postal_error` enum value from the `error/code` response property for the response status `402` - removed the `postal_error` enum value from the `error/code` response property for the response status `409` - removed the `postal_error` enum value from the `error/code` response property for the response status `429` - removed the `postal_error` enum value from the `error/code` response property for the response status `500` - **2026-02-04** `4f8eeb0b9933` — 276 warning - added the new `already_exists` enum value to the `error/code` response property for the response status `400` - added the new `already_exists` enum value to the `error/code` response property for the response status `401` - added the new `already_exists` enum value to the `error/code` response property for the response status `402` - added the new `already_exists` enum value to the `error/code` response property for the response status `409` - added the new `already_exists` enum value to the `error/code` response property for the response status `429` - added the new `already_exists` enum value to the `error/code` response property for the response status `500` - added the new `attachment_too_large` enum value to the `error/code` response property for the response status `400` - added the new `attachment_too_large` enum value to the `error/code` response property for the response status `401` - added the new `attachment_too_large` enum value to the `error/code` response property for the response status `402` - added the new `attachment_too_large` enum value to the `error/code` response property for the response status `409` - added the new `attachment_too_large` enum value to the `error/code` response property for the response status `429` - added the new `attachment_too_large` enum value to the `error/code` response property for the response status `500` - added the new `authentication_required` enum value to the `error/code` response property for the response status `400` - added the new `authentication_required` enum value to the `error/code` response property for the response status `401` - added the new `authentication_required` enum value to the `error/code` response property for the response status `402` - added the new `authentication_required` enum value to the `error/code` response property for the response status `409` - added the new `authentication_required` enum value to the `error/code` response property for the response status `429` - added the new `authentication_required` enum value to the `error/code` response property for the response status `500` - added the new `billing_error` enum value to the `error/code` response property for the response status `400` - added the new `billing_error` enum value to the `error/code` response property for the response status `401` - added the new `billing_error` enum value to the `error/code` response property for the response status `402` - added the new `billing_error` enum value to the `error/code` response property for the response status `409` - added the new `billing_error` enum value to the `error/code` response property for the response status `429` - added the new `billing_error` enum value to the `error/code` response property for the response status `500` - added the new `billing_not_configured` enum value to the `error/code` response property for the response status `400` - added the new `billing_not_configured` enum value to the `error/code` response property for the response status `401` - added the new `billing_not_configured` enum value to the `error/code` response property for the response status `402` - added the new `billing_not_configured` enum value to the `error/code` response property for the response status `409` - added the new `billing_not_configured` enum value to the `error/code` response property for the response status `429` - added the new `billing_not_configured` enum value to the `error/code` response property for the response status `500` - added the new `credential_not_found` enum value to the `error/code` response property for the response status `400` - added the new `credential_not_found` enum value to the `error/code` response property for the response status `401` - added the new `credential_not_found` enum value to the `error/code` response property for the response status `402` - added the new `credential_not_found` enum value to the `error/code` response property for the response status `409` - added the new `credential_not_found` enum value to the `error/code` response property for the response status `429` - added the new `credential_not_found` enum value to the `error/code` response property for the response status `500` - added the new `credential_on_hold` enum value to the `error/code` response property for the response status `400` - added the new `credential_on_hold` enum value to the `error/code` response property for the response status `401` - added the new `credential_on_hold` enum value to the `error/code` response property for the response status `402` - added the new `credential_on_hold` enum value to the `error/code` response property for the response status `409` - …236 more - **2026-02-02** `13bda63d06ce` — 1 breaking - removed the required property `data/messages/additionalProperties/token` from the response with the `200` status - **2026-01-30** `65d92724dca2` — 1 info - added the required property `data/messages/additionalProperties/token` to the response with the `200` status - **2026-01-30** `39b91ffd46b6` — 1 breaking - removed the required property `data/messages/additionalProperties/token` from the response with the `200` status - **2026-01-30** `65d92724dca2` — 1 info - added the required property `data/messages/additionalProperties/token` to the response with the `200` status - **2026-01-30** `bf0351a8fa1d` — 1 breaking - removed the required property `data/messages/additionalProperties/token` from the response with the `200` status - **2026-01-23** `c7a958bca791` — 6 info - added the optional property `error/hint` to the response with the `400` status - added the optional property `error/hint` to the response with the `401` status - added the optional property `error/hint` to the response with the `402` status - added the optional property `error/hint` to the response with the `409` status - added the optional property `error/hint` to the response with the `429` status - added the optional property `error/hint` to the response with the `500` status - **2026-01-21** `34d225476c98` — 1 info - added the optional property `data/sandbox` to the response with the `200` status --- [Operation](https://skmtc.dev/arkhq-io/apis/ark-email-api/docs/emails/batch/post.md) · [API](https://skmtc.dev/arkhq-io/apis/ark-email-api.md) · [Page](https://skmtc.dev/arkhq-io/apis/ark-email-api/changes/emails/batch/post)