I am looking to integrate Wordpress so this will happen...when someone buys product A or B Then then a username and password is sent to them in a welcome email. I use Activecampaign and can use Mailerlite too. I'm using Thrivecart for a cart. The email will have some other onboarding instructions too. How can I get this done? The new user needs to be given the correct role (Admin, Subscriber, etc.) so they can access the product and special sections of my site.