Email

We are building a website on WP.org, using the WP-Members plugin to help us manage users. We are having some issues with emails. When we register and approve a new user, the user receives at least two emails, one from WordPress and the other from WP-Members, which confuses the users. Is there a way to rely only on WP-Members and to deactivate the WordPress email?

I am sorry if this is a very basic question, but I am new to WordPress and so still learning the ropes. Thank you.