AT&T is permanently shutting down its email-to-text and text-to-email gateway, which means alerts sent to @txt.att.net or @mms.att.net no longer reach phones. For IT teams, MSPs, facilities teams, building management, utilities and incident response teams in general, this creates a serious gap. Critical alerts from monitoring tools, ITSM platforms, building systems, IoT devices, and other operational systems still need to reach the right person quickly, especially after hours.