---
title: "Changes to Record Participants by Email with Marketing Event External Ids"
method: POST
path: "/marketing/marketing-events/2026-09/attendance/{externalEventId}/{subscriberState}/email-create"
---

# Changes to Record Participants by Email with Marketing Event External Ids

`POST /marketing/marketing-events/2026-09/attendance/{externalEventId}/{subscriberState}/email-create`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 1 of 8 revisions.

- **2026-09-03** (2026-09) `e62ad9a49a20`: 1 breaking, 1 info

## Changes

- **2026-09-03** (2026-09) `e62ad9a49a20`: 1 breaking, 1 info
  - the `results/items/vid` response's property format changed from `int32` to `int64` for status `200`
  - the endpoint scheme security `private_apps` was removed from the API

---

[Operation](https://skmtc.dev/hubspot/apis/marketing-marketing-events/docs/marketing/marketing-events/2026-09/attendance/:externalEventId/:subscriberState/email-create/post.md) - [API](https://skmtc.dev/hubspot/apis/marketing-marketing-events.md) - [Page](https://skmtc.dev/hubspot/apis/marketing-marketing-events/changes/marketing/marketing-events/2026-09/attendance/:externalEventId/:subscriberState/email-create/post)