All major carriers have now discontinued Email-to-SMS services. Because of this, sending alerts from multiple email addresses will unfortunately not solve the issue, since the carriers themselves no longer accept email messages and convert them to texts.
The currently working options are either to send the alerts through our SMS service directly to the parents’ mobile numbers, or to send the alerts to their email addresses.
Therefore, if you want parents to reliably receive alerts as text messages, the recommended solution is to send them through our SMS service.