How do we change customer email programmatically in Magento 2?

Question

How do we change a customer's email programatically in Magento 2?

Answer 1

Use \Magento\Customer\Api\CustomerRepositoryInterface to change customer information.

protected $_customerRepositoryInterface;

public function __construct ( 
    ...
    \Magento\Customer\Api\CustomerRepositoryInterface $customerRepositoryInterface
    ...
) {
    ...
    $this->_customerRepositoryInterface = $customerRepositoryInterface;
    ...
}

public function changeCustomerInfo()
{
    $customerId = '1'; // customer ID
    $customer = $this->_customerRepositoryInterface->getById($customerId);
    $customer->setEmail("[email protected]");  //set customer email
    $customer->setFirstname("First Name"); //set customer First Name
    $customer->setLastname("Last name"); // set customer Last Name
    $this->_customerRepositoryInterface->save($customer);
}