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wp_send_new_user_notifications( int $user_id, string $notify = 'both' )

Initiates email notifications related to the creation of new users.

Notifications are sent both to the site admin and to the newly created user.

$user_id

(int) (Required) ID of the newly created user.

$notify

(string) (Optional) Type of notification that should happen. Accepts 'admin' or an empty string (admin only), 'user', or 'both' (admin and user).

Default value: 'both'

function wp_send_new_user_notifications( $user_id, $notify = 'both' ) {
	wp_new_user_notification( $user_id, null, $notify );
}

Uses	Description
wp-includes/pluggable.php: wp_new_user_notification()	Email login credentials to a newly-registered user.

Version	Description
4.6.0	Converted the `$notify` parameter to accept 'user' for sending notifications only to the user created.
4.4.0	Introduced.