--- title: "Changes to Send an email" method: POST path: "/emails" --- # Changes to Send an email `POST /emails` > Every recorded change to this operation, newest first. ## Timeline Changed in 5 of 49 revisions. - **2026-02-18** `e38e03901deb`: 3 warning - **2026-02-08** `37bce0c9a4d7`: 7 warning, 7 info - **2026-02-08** `4f8eeb0b9933`: 322 warning - **2026-01-23** `c7a958bca791`: 7 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` - **2026-02-08** `37bce0c9a4d7`: 7 warning, 7 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 `422` - 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 `422` - 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` - **2026-02-08** `4f8eeb0b9933`: 322 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 `422` - 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 `422` - 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 `422` - 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 `422` - 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 `422` - 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 `422` - …282 more - **2026-01-23** `c7a958bca791`: 7 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 `422` 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/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/post)