customer account

Topic summary

A user inquired about preventing customers from creating multiple accounts with the same email or phone number, proposing a redirect to password reset instead of allowing duplicate registrations.

Current Shopify Behavior:

  • Shopify natively enforces unique email addresses and phone numbers for customer accounts
  • Attempting to register with an existing email triggers an error message (“Email already taken”)
  • Multiple accounts under the same credentials should not be possible by default

Recommended Action:

  • Contact Shopify support directly if duplicate account creation is occurring, as this would indicate a technical issue with standard platform functionality
Summarized with AI on November 2. AI used: claude-sonnet-4-5-20250929.

hello, how can i implement a feature that prevents customers from creating multiple accounts using the same email or phone number. If a customer attempts to register with an existing email or phone number, they should be redirected to reset their password for their old account instead.

This approach ensures that we do not have multiple accounts for the same customer, and there will be no need to merge accounts later.

Hey @tatianarouhana1 !

Shopify already enforces that the primary email address and phone number on an account must be unique, and customers should definitely not be able to register multiple accounts under the same email address. If the customer does try to register again with the same email, they should see an error message for something like “Email already taken”.

Since this is a standard Shopify feature, I would recommend reaching out to Shopify support directly if you are experiencing a problem with it.