Classification of the feature
Shopify has marked the previous “legacy customer accounts” as deprecated. This means the old account logic will no longer be developed and will eventually be completely replaced. Stores are expected to switch to the new customer accounts, which are built differently from a technical perspective and rely more on modern authentication and extensibility. As of today, the old version can still be used, but it is not future-proof. This creates a clear need for migration for existing stores.
What the feature is – and what it isn’t
Deprecation is not a feature in the classic sense, but rather a transitional state. With it, Shopify is signaling that existing customer accounts are no longer the recommended standard.
What it is:
A clear strategic move by Shopify toward new customer accounts that are built on modern infrastructure and integrate better with checkout, authentication, and extensions.
What it is not:
No immediate obligation to switch. Shops can continue using legacy accounts for now. It is also not an automatic upgrade. If you do nothing, you will remain on the old version for the time being – with all its limitations.
Requirements & Data Basis
Before a changeover makes sense, the underlying data should be reviewed. Customer accounts are not an isolated feature but are closely tied to existing processes.
Important prerequisites:
- Email addresses must be valid, since the new accounts rely heavily on email-based login (e.g. magic link).
- Consent must be properly documented, especially for international shops with GDPR requirements.
- Customers must be uniquely identifiable, e.g. no multiple accounts per email address.
- Country-specific requirements (e.g. double opt-in) must be taken into account
- Existing integrations (CRM, ERP, loyalty systems) must be reviewed
When data is messy, the migration often leads to login issues or lost customer relationships.
How to use it concretely in the Shopify admin (step by step)
The change is made in the Shopify admin under the customer account settings.
Typical procedure:
- In the Shopify admin, navigate to “Settings” → “Customer accounts”
- Check current status (legacy vs. new accounts)
- Activate new customer accounts
- Configure login behavior (e.g. email-based login without a password)
- Check checkout linking (account creation during or after purchase)
- Create a test user and go through the login process
Important: Changes have a direct impact on the login process. Therefore, always test them first in a test environment or with internal accounts.
Practice logic that determines cost/quality
The quality of customer accounts is not evident in the setup, but in everyday use.
Important influencing factors:
- Login barrier: When customers can’t log in, the repeat purchase rate measurably declines
- Email deliverability: Magic links only work if emails are delivered reliably
- Session handling: Customers expect to stay logged in
- Device change: Login must also work reliably on mobile devices
If, for example, emails end up in spam, the system is technically set up correctly but practically unusable.
Typical practical applications
Customer accounts are not an end in themselves. They become relevant wherever recognition and personalization are crucial.
Typical use cases:
- Repeat purchases in D2C: Customers view their order history and reorder faster
- B2B logic: Customer accounts control prices, minimum order quantities, or approvals
- Internationalization: Accounts store language, currency, and delivery preferences
An example: If a customer orders regularly, a working login significantly reduces the steps needed to complete a purchase.
Text / template examples
Brief, clear communication is essential.
Examples:
- “Your account is ready – log in here:” + link
- “Access your orders:” + link
- “Order faster with your account:” + link
Note:
Emails should be brief. Texts that are too long reduce the click-through rate. Links should be clearly labeled.
When it makes sense / when it doesn’t
Makes sense:
- When repeat purchases play a major role
- When customers order regularly or need personalized content
- If B2B structures are in place
Not meaningful:
- For pure one-product shops with one-time purchases
- When customers hardly ever return
- When the data basis is unreliable
An account only adds value if it is actually used.
Mistakes to avoid
Typical mistakes in projects:
- Switch without a testing phase → login doesn’t work for real customers
- Email delivery not verified → Magic links are not being received
- Ignore integrations → your CRM or ERP loses its connection
A common mistake is to see the transition as purely technical. In practice, it’s a customer experience issue.
Technical implications for larger shops
For larger shops, the topic quickly becomes complex.
Important aspects:
- Data flows between Shopify, CRM, and ERP must remain stable
- Authentication may involve external systems
- Test cases should cover all scenarios (new customer, existing customer, B2B customer)
- Governance is important: Who is allowed to make changes to the login system?
Especially in international setups, small changes can have a big impact.
Moving Primates Perspective
In projects, it becomes clear that the biggest challenge is rarely activation, but rather the migration of the existing logic. Old customer accounts are often seen as a “simple login system,” even though they are deeply integrated into processes such as CRM, ERP, or marketing automation. The risk: after the switch, individual flows may no longer work, for example because customer data is not being synchronized properly. A step-by-step approach has proven effective: first check data quality, then test critical integrations, and then go live with a small user group. Once login, email delivery, and data synchronization are running reliably, the migration can be rolled out more broadly.
10-point checklist before go-live
- Does the login work on desktop and mobile?
- Are all emails being delivered reliably?
- Are all customers uniquely identifiable?
- Will existing integrations continue to work?
- Was it tested with real test customers?
- Is the checkout still running smoothly?
- Are there support processes for login issues?
- Are data protection requirements met?
- Has the process been tested internationally?
- Is there a fallback or rollback scenario?
Summary in bullet points
- Legacy customer accounts will no longer be developed
- New customer accounts are the future standard
- Switch is made manually in the Shopify admin
- Data quality is crucial for success
- Email delivery is a critical factor
- Customer accounts directly influence repeat purchases
- Segmentation is what makes accounts meaningful in the first place
- Tests before go-live are mandatory
- Integrations must be checked
- Migration is more than just a technical update
FAQ
What does “deprecated” actually mean?
The feature is no longer being developed and will be removed in the long term. It can still be used for now, but it is not future-proof.
Do I have to switch right away?
No. As of today there is no obligation, but in the long term there will be no way around making the switch.
What data do I need?
Clean email addresses, unique customer profiles, and documented consent are the foundation.
How much does the migration cost?
Shopify itself usually doesn’t charge an additional fee for this. Costs are more likely to arise from implementation, testing, and customization.
When is it unsuitable?
If customers rarely return or don’t use accounts, switching over adds little value.
What is the biggest risk?
Login issues after the changeover. If customers can’t log in, it has a direct impact on revenue and support.
Links
Shopify Changelog – Deprecation of Legacy Customer Accounts
https://changelog.shopify.com/posts/legacy-customer-accounts-are-now-deprecated
→ Official announcement and context for the change
Shopify Help Center – Customer Accounts
https://help.shopify.com/en/manual/customers/customer-accounts
→ Documentation on setting up and using customer accounts
Shopify Dev Docs – Customer Accounts
https://shopify.dev/docs
→ Technical background and developer documentation
