From outside system built in PHP, I wrote this following to call API for create customer account:
'customer' =>
array (
'first_name' => $_POST['datalog']['firstName'],
'last_name' => $_POST['datalog']['lastName'],
'email' => $_POST['datalog']['email'],
'verified_email'=> true,
'password'=> $rand_pass,
'password_confirmation' => $rand_pass,
//'send_email_welcome' => true,
'send_email_invite' => true,
),
Creation of customers are working successfully but they did not receive any invitation email. I have followed the Shopify Documentation : https://help.shopify.com/api/reference/customer