How to Connect Your Shopify Store to Mailzzy

Last updated on October 22, 2026

Connect your Shopify store to Mailzzy to bring your customers in as contacts, send emails when customers buy or leave a cart, and add products to your emails. This guide covers installing the app and syncing your customers.

Before You Start

You need permission to install apps on your Shopify store.

You need to be an admin in your Mailzzy account. Only admins can connect or disconnect Shopify.

Install the Mailzzy App

Mailzzy connects through Shopify's app installation, so you never need to copy or paste an API key.

In Mailzzy, go to Integrations and select Shopify.
Select Install from Shopify App Store.
In Shopify, review the permissions and install the app.
Mailzzy opens inside your Shopify admin to confirm the connection.

Map Customer Fields

Select Configure sync to choose where each Shopify customer field is saved in Mailzzy. These fields are mapped for you:

Shopify field	Mailzzy field
Email	Email
First name	First name
Last name	Last name
Phone	Contact number
Address	Address
City	City
Province	State
ZIP / postal code	Postal code
Country	Country

Change any mapping, or choose Do not sync to leave a field out, then select Save mappings. Data flows one way, from Shopify into Mailzzy.

Choose Your Sync Options

Conflict handling: decide which side wins when a contact changes in both places. Choose Most recent change wins (recommended), Shopify always wins or Mailzzy always wins.

Add synced contacts to group: pick a group for your Shopify customers.

Import existing customers: turn this on to bring in the customers already in your store.

When you're ready, select Save & start sync.

How Syncing Works

New and updated customers keep syncing automatically after the first import. You can also select Sync now at any time.

Only customers who agreed to receive email marketing in Shopify are added as Subscribed contacts. Everyone else is added as Unsubscribed.

If a customer later opts out in Shopify, their Mailzzy contact is unsubscribed and removed from the sync group.

Is Your Store Data Secure?

Yes. Mailzzy connects through Shopify's secure app installation and handles your customer data under the Mailzzy Privacy Policy and Shopify's customer data requirements.