Get Customer Default Billing address by REST Webapi V1/customers/:customerId/billingAddress Magento.

To Retrieve Customer Default Shipping address by REST Webapi in Magento using Endpoint /V1/customers/:customerId/shippingAddress

Just Change the :customerId from the Endpoint with an Original customer ID to fetch the Shipping address of the Customer.

Get Default Billing address by Webapi V1/customers/:customerId/billingAddress Magento.

Get Customer Default Billing address by Webapi in Magento using Endpoint /V1/customers/:customerId/billingAddress

Replace :customerId with an Original customer ID to fetch the Billing address of the Customer.

Check given customer email is available by rest/V1/customers/isEmailAvailable REST API Magento 2.

You can verify given Emai address is available on the website using Endpoint /V1/customers/isEmailAvailable.

If an email exists on the given website, the response will be false because the same email id already exists on the given website else the response will be true.