MemebrPress: Send MemberPress Welcome Email Only When Transaction Is Completed

function send_welcome_email_on_transaction_completed($event) {

    $txn = $event->get_data(); // Get the transaction data

    MeprUtils::send_notices($txn, 'MeprUserWelcomeEmail', null, true); // Send the welcome email

}

add_action('mepr-event-transaction-completed', 'send_welcome_email_on_transaction_completed');