♠️ [KLAVIYO] Webhook, what is it and how does it work?
Updated at September 22nd, 2025
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👀 For those who are curious, here are some explanations from Klaviyo about webhooks.
Understanding Webhooks
A webhook is a method that allows applications to exchange information in real time.
In Klaviyo, a webhook sends data to a third-party tool (Simio for example) as soon as an event occurs, such as an order placed or a new subscriber.
For example, if a customer places an order, Klaviyo sends that data to Simio. Conversely, if a customer reads a WhatsApp message, Simio sends the information to Klaviyo.
👉 Understanding webhooks (Klaviyo documentation)
Klaviyo translated flow as “flux”
Configure webhooks
👉 Add a webhook to a flow (Klaviyo documentation)
Two-step authentication is required to use Klaviyo webhooks. You must be a Manager , Admin , or Administrator to enable two-step authentication and to add or edit webhooks.