Email Marketing via Shopify Flow

Fish Wishlist fires Shopify Flow triggers when customers add or remove products from their wishlist. You can use these triggers to connect to any email or SMS marketing platform — not just Klaviyo.

Supported platforms include Klaviyo, Dotdigital, Omnisend, Attentive, and any other platform that has a Shopify Flow action.

How it works

1. A customer adds or removes a product from their wishlist
2. Fish Wishlist fires a Shopify Flow trigger
3. Your Flow sends event data to your email/SMS platform
4. Your platform triggers or cancels the relevant campaign

Prerequisites

• Fish Wishlist installed and active
• Your email platform installed and connected to Shopify
• Shopify Flow installed (free on all Shopify plans)
• Your platform's API key

Klaviyo — Quick Start

We've built ready-to-use Shopify Flow templates for Klaviyo:

👉 Load Flow Templates

Template 1: Trigger campaign when product is added to wishlist

Sends a custom event to Klaviyo when a product is added. Use this to trigger a reminder flow — e.g. "You saved this — it's still available".

Template 2: Cancel campaign when product is removed

Sends a cancel event when a product is removed. Stops the reminder flow so customers don't receive emails about items they're no longer interested in.

Setup

The only field you need to populate is your Klaviyo Public API Key. Find it in Klaviyo under Account > Settings > API Keys. Add it to the Flow, publish, and you're live.

Other email platforms

The same Flow approach works for any platform with a Shopify Flow action. The templates above can be adapted — just swap the Klaviyo action for your platform's equivalent action and add your API credentials.

If you need help setting up a custom Flow for your platform, contact support and we'll get it done.

Available Flow triggers

Fish Wishlist exposes the following triggers in Shopify Flow:

These triggers include product details, customer ID, and wishlist metadata — enough to personalise your campaigns effectively.

Notes

• All integration logic lives in Shopify Flow — no custom code required
• You can build flows beyond the provided templates
• Fish Wishlist triggers don't require any additional app configuration