Tutor LMS - Send welcome email to register user.

functions.php

function send_email_after_signup( $user_id ) {
	
	$student_id 		= tutils()->get_user_id($user_id);
	$student 			= get_userdata($student_id);

	$site_url 			= get_bloginfo( 'url' );
	$site_name 			= get_bloginfo( 'name' );

	$display_name 		= $student->display_name;
	$user_email 		= $student->user_email;
	$user_email 		= $student->user_email;

	$to 				=	$user_email;
	$subject 			= 	'Your Subject line will goes to here';
	$body 				= 	"
	Hello {$display_name} <br/>
		Thank you for joining to our website. <br/>
	Regards.
	";
	$headers 			= array('Content-Type: text/html; charset=UTF-8');
	wp_mail( $to, $subject, $body, $headers );
}
add_action( 'tutor_after_student_signup', 'send_email_after_signup');