The e-alert notification system from GovDelivery.com is free for your school to use. It allows you to create customized newsletters, emails and text messages to send to your subscribers.
To assign administrators to use the e-alert system, send their names and email addresses to firstname.lastname@example.org. The new administrators will receive an email outlining their next steps.
To see how this service works, visit: https://public.govdelivery.com/accounts/PGCPS/subscriber/topics?qsp=PGCPS_9