Mass Notification System: Frequently Asked Questions How do I register to receive alerts? You can register to receive alerts by checking your communities webpage or by downloading the free Your 911 app through the Apple App or Google Play Store. When will I be contacted? You will be contacted when safety forces feel there is important information that you should be made aware of. How do I know messages are from safety forces? All SMS messages are sent from 588-43 and all phone calls are made from (440) 638-5226. It is recommended that you put this numbers into your phone as contacts. Does it cost money? Standard SMS and phone calling rates apply. Check with your cellular carrier for policy details about your contract with them. How do I stop getting alerts? You can log into your account and click ‘unsubscribe’. You can also reply to SMS messages with the word ‘stop’ and you will be unsubscribed.