Triggered after an email notification is sent to LemonStand users.
Event handler example:
public function subscribeEvents()
{
Backend::$events->addEvent('core:onAfterEmailSendToTeam', $this, 'after_email_send_to_team');
}
public function after_email_send_to_team($users, $subject, $message_text, $customer_email, $customer_name)
{
// Do something
}