---
title: "Postmark Open Webhook"
method: POST
path: "/v1/integrations/postmark/open-webhook"
---

# Postmark Open Webhook

`POST /v1/integrations/postmark/open-webhook`

## Request

- Base URL: `https://api.storyflo.com` (the document declares no server; this is the origin it was published from)
- URL: `https://api.storyflo.com/v1/integrations/postmark/open-webhook`
- Auth: none declared

Postmark Open Tracking webhook → stamps
``Publisher.raw_json.cold_outreach_opened_at`` on the first open.

Auth: ``?secret=<POSTMARK_OPEN_SECRET>``. Operator wires this up in
Postmark UI → Servers → Webhooks with the Open event checked.
Returns 200 unconditionally.

## Response `200`

Successful Response

- object

---

[API](https://skmtc.dev/storyflo/apis/storyflo-inference-router.md) · [All operations](https://skmtc.dev/storyflo/apis/storyflo-inference-router/llms.txt) · [OpenAPI document](https://skmtc.dev/storyflo/apis/storyflo-inference-router/revisions/c3a1a735ac7a?raw)