In a move that caught many businesses and IT teams off guard, U.S. mobile carrier AT&T officially discontinued its email-to-text gateway service. ATT email-to-text was shut down on June 17, 2025. This change means that sending sms messages and mobile text alerts to AT&T subscribers using the format number@txt.att.net or number@mms.att.net no longer works.
The sudden ATT email-to-text shutdown has created a critical need for a reliable, secure, and modern alternative to ensure that vital messages still reach the right people instantly. Enter SIGNL4 – a powerful, mobile alerting solution designed specifically for operational reliability and team responsiveness.
Meet SIGNL4: The Modern Email-to-Text Alternative
SIGNL4 is a mobile-first alerting and incident response platform that empowers operational teams to receive, acknowledge, and act on critical alerts – anywhere, anytime. It bridges the gap between IT systems and human response, making sure the right people are alerted at the right time.
Why SIGNL4 is the Ideal Replacement – Reliable alerting service and fast, real-time alerts and messages
Here’s why SIGNL4 stands out as the go-to solution after AT&T’s email service shutdown:
Setup in 5 mins – SIGNL4’s email-to-text is ready to use out of the box. No workflows required – just add and verify users’ phone numbers. Each team gets a dedicated email address, so sending an email instantly delivers SMS alerts and, with the app installed, push notifications to all team members.
Reliable and Instant Mobile Alerts – SIGNL4 ensures that alerts are delivered instantly to the recipient via push notifications, SMS notifications, text messages, voice calls, and email – all with confirmation and tracking.
Team Routing and On-Call Scheduling – Unlike email-to-text, SIGNL4 supports intelligent routing based on who is on duty, ensuring that the right person receives the alert. You can easily configure duty schedules, shifts, and escalation paths.
Acknowledgement and Accountability – Every alert can be acknowledged with a tap, and teams can see who’s responding in real-time.
Secure and Auditable – SIGNL4 offers end-to-end encryption, role-based access control, and a detailed audit trail – ideal for compliance-heavy environments.
Easy Integration – With out-of-the-box integrations for tools like Microsoft Teams, Azure Monitor, Splunk, and more, plus a REST API and webhook support, SIGNL4 fits seamlessly into existing workflows.
Replace Email-to-Text Services with the Help of SIGNL4 for Intelligent, Mobile-First Alerting and Workflow Automation
SIGNL4 not only replaces this outdated method but supercharges your incident response with intelligent, accountable, and mobile-first alerting – helping your teams react faster and more effectively. Don’t wait for another alert to be lost.
