Your email marketing platform connects to WooCommerce to sync customer data, pull order events, and trigger automations. When you migrate to Shopify, the WooCommerce connection breaks — Shopify's order events and customer data come from a different API. This guide covers reconnecting each major email platform to Shopify, updating automations, and making sure nothing falls through the cracks on migration day.

The core issue: WooCommerce-specific data and triggers

Email platforms that integrated with WooCommerce were using:

WooCommerce webhooks: order.created, order.updated, order.completed
WooCommerce REST API: customer data, order history, product catalog
WooCommerce-specific properties: order.total, product.categories, customer.wc_order_count

On Shopify, all of these become Shopify-specific events and properties. The email platform needs to be reconnected to Shopify's data sources, and any automations referencing WooCommerce-specific fields need to be updated.

Klaviyo migration

Klaviyo is the most popular advanced email platform for WooCommerce and Shopify. If you're using Klaviyo, this is relatively straightforward — Klaviyo supports both platforms natively.

Step 1: Keep Klaviyo running during migration

Don't disconnect WooCommerce from Klaviyo before Shopify is ready. WooCommerce and Shopify connections can run simultaneously in Klaviyo, allowing:

Historical data from WooCommerce to remain in Klaviyo
New events from Shopify to flow in from day one of migration

Step 2: Install Klaviyo on Shopify

Shopify App Store → search Klaviyo → install
In Klaviyo dashboard: confirm Shopify integration is connected and healthy
Klaviyo will start syncing Shopify customer data and events

Step 3: Update automations with WooCommerce triggers

Review all your Klaviyo flows (automations) for WooCommerce-specific triggers and properties:

WooCommerce trigger/property	Shopify equivalent
WooCommerce: Order Placed	Shopify: Placed Order
WooCommerce: Order Fulfilled	Shopify: Fulfilled Order
WooCommerce: Order Refunded	Shopify: Cancelled Order or Refunded Order
WooCommerce: Abandoned Checkout	Shopify: Started Checkout
WooCommerce: Subscribed to Newsletter	Shopify: Subscribed to List
WooCommerce: Customer First Purchase	Shopify: Placed Order (filter: order_count = 1)

Update each flow: change the trigger from WooCommerce to Shopify. Update any property references in email content (e.g., {{ event.value }} remains the same across platforms; {{ event.line_items[0].product_url }} may differ).

Step 4: Historical data

Klaviyo retains your historical WooCommerce event data — all past orders, opens, clicks remain in your subscriber profiles. New Shopify events add to the same profiles (matched by email address). No data loss.

Step 5: Remove WooCommerce integration (after stable on Shopify)

After 30+ days stable on Shopify, disconnect the WooCommerce integration in Klaviyo. This stops WooCommerce-originated events (there won't be any new ones anyway) and cleans up your integration list.

Mailchimp migration

Mailchimp has both WooCommerce and Shopify integrations, but they're separate apps with separate sync mechanisms.

Disconnecting WooCommerce

Mailchimp → Integrations → WooCommerce → Disconnect
Your subscriber lists, tags, and campaign history stay in Mailchimp — only the sync stops

Connecting Shopify

Shopify App Store → search "Mailchimp for Shopify" → install
Connect your Mailchimp account
Mailchimp will start syncing Shopify customers and order data

Updating automations

Mailchimp automations triggered by WooCommerce events (e.g., "first purchase" automation) need to be recreated for Shopify:

Abandoned cart series: recreate using Shopify's abandoned checkout event
Post-purchase follow-up: recreate using Shopify order events
Product recommendation emails: update to use Shopify product catalog

Note on Mailchimp's Shopify integration quality

Mailchimp's Shopify integration is less deep than Klaviyo's. If you were using Mailchimp's WooCommerce integration for anything beyond basic email sending, this migration may be a good time to evaluate Klaviyo — it's the de facto standard for Shopify email marketing.

Omnisend migration

Omnisend is designed for ecommerce and supports both WooCommerce and Shopify natively.

Step 1: Install Omnisend for Shopify

Shopify App Store → Omnisend → install
Connect your existing Omnisend account
Omnisend syncs Shopify data alongside or replacing WooCommerce data

Step 2: Update automations

Omnisend automations use event-based triggers. WooCommerce-specific triggers need to be updated to Shopify equivalents:

"Order placed" automation: trigger stays the same (Omnisend abstracts the platform)
Product-specific automations: update product catalog references
Category-based segments: update from WooCommerce categories to Shopify collections

Step 3: Disconnect WooCommerce integration

Omnisend Settings → Integrations → WooCommerce → Disconnect after Shopify integration is stable.

Brevo (formerly Sendinblue) migration

Shopify App Store → Brevo (SendinBlue) → install
Connect your Brevo account
Uninstall the WooCommerce Brevo plugin from WordPress
Update automations: Brevo's Shopify integration uses different event names than WooCommerce

What to do with your subscriber list

Your email subscriber list is stored in your email platform (Klaviyo, Mailchimp, etc.) — NOT in WooCommerce. This is great news for migration:

Subscriber lists stay in your email platform regardless of migration
Segments based on purchase behavior (bought X, bought from category Y) will need to be rebuilt over time as Shopify order data accumulates
Historical segments based on old WooCommerce data may become stale over time (no new data from WooCommerce)

Marketing consent for migrated customers

Customers who opted into marketing on WooCommerce: their consent record is in your email platform, not in WooCommerce. However, when you migrate customers to Shopify via CSV import, Shopify's email marketing consent field defaults to "not subscribed" unless you explicitly set it.

For GDPR-compliant handling: sync email consent status from your email platform to Shopify customer records. Export "subscribed" customers from Klaviyo/Mailchimp → update their Shopify customer record's email marketing consent to "subscribed" via CSV import.

Abandoned cart email continuity

On migration day, there may be active abandoned carts in both WooCommerce and Shopify:

WooCommerce abandoned carts from before the DNS switch: these will never convert — the store is gone. Let the existing abandoned cart sequence play out or cancel it manually.
Shopify abandoned carts from after DNS switch: new sequence, new tracking. Make sure your Shopify abandoned cart automation is live and tested on day 1.

Email marketing migration checklist

Install your email platform's Shopify app before migration day
Do NOT disconnect WooCommerce integration until Shopify integration is confirmed working
List all active email automations and their triggers
Update each automation: change WooCommerce triggers to Shopify equivalents
Update abandoned cart automation to use Shopify's "Started Checkout" event
Test automations: place a test order on Shopify, verify triggered emails work
Verify subscriber sync: confirm new Shopify customers appear in email platform
After 30+ days stable: disconnect WooCommerce integration from email platform
Sync email marketing consent to Shopify customer records (for GDPR compliance)
Check segment definitions: update any WooCommerce-specific property references

Email marketing is too valuable to let break on migration day. The reconnection process for most platforms takes 30–60 minutes — do it before the DNS cutover so it's ready from minute one.

Email marketing migration: WooCommerce to Shopify (klaviyo, Mailchimp, omnisend) (2026)