Modern IT Alerting for Faster Incident Response
Stay ahead of critical IT incidents and minimize downtime with SIGNL4 – automated, secure, and in real-time.
- RAutomated mobile IT alerting
- RTrusted by 1,000+ organizations worldwide
- REnterprise-grade security standards and data privacy
- RNo complex onboarding – set up in 5 minutes

How it works
What is Modern IT Alerting?
In 24/7 IT Operations & Service Management, speed is everything. But critical incidents are still too often missed — buried in inboxes or lost without clear ownership — especially after-hours or on weekends.
Modern IT alerting solves this by delivering actionable, automated, real-time alerts from your IT monitoring or ITSM systems straight to the right people — via mobile push, SMS, voice, and more.
With built-in duty scheduling, alert tracking, and automatic escalations, you ensure fast response times — even outside business hours.
How does it work with SIGNL4
SIGNL4 connects to your IT monitoring and IT management systems to automatically deliver alerts to the right people at the right time — via mobile app, push, text, voice, or email. Built-in tracking, acknowledgments, escalations, alert enrichment, and on-call scheduling ensure no alert goes unanswered.


Never miss an alert
Automated IT Alerting
SIGNL4 ensures that critical IT incident alerts reach the right on-call engineer — fast and reliably.
Automated notifications via push, SMS, email, and voice come with built-in tracking, acknowledgments, and escalations.
Workflow automation and smart filtering prevent alert fatigue by focusing only on relevant, high-priority incidents.
The modern way
Your Mobile Companion
SIGNL4 comes with a unique mobile app for anywhere IT incident management and on-call scheduling. Acknowledge, escalate, and resolve incidents on the go. It’s IT operations, made mobile.


Scheduling built-in
On-Call Scheduling Made Simple
SIGNL4 offers built-in, easy-to-use on-call scheduling — no separate tools needed.
Route critical alerts automatically to available staff, and schedule team availabilities right from your browser.
After-business hours hotline
After-Hours Call Routing
SIGNL4 enables effortless setup of an after-hours service hotline. Incoming calls are automatically forwarded to on-call staff or recorded in a voicemail with instant mobile alerting.
Voice messages can be played back directly in the SIGNL4 app for fast response and follow-up.


Out-of-the-Box Connectors & Powerful APIs
Seamless Integrations
Easily connect SIGNL4 with any ITOM or ITSM system via email, webhooks, REST, or 2-way integrations. Consolidate alerts from across your IT landscape with 185+ tested and verified integrations.
Streamline IT Services & ITIL Workflows
Benefits of IT Alerting Systems for your Business
SIGNL4 helps you respond up to 10x faster by replacing manual alerting with reliable, automated communication flows. It significantly reduces unexpected downtime — often by more than 50% — and cuts alert noise and false positives by up to 95%.

A proven solution
1000+ Customers worldwide


































“We’ve been using SIGNL4 as part of Melrose Labs cloud services operations and it’s been fantastic! SIGNL4 is an incredible mobile alerting SaaS that’s supercharged our response capabilities. With SIGNL4, critical alerts are sent directly to our team’s mobile devices, allowing for a swift and efficient response to urgent issues. The difference it makes in speed and reliability is outstanding, with up to a 10x faster response to critical incidents. Kudos to SIGNL4 for such a powerful tool!”
Next Steps
Learn more and start your free 30-days trial of SIGNL4
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Summary
SIGNL4 is a cloud-based alerting solution built for critical event management and rapid incident response. Designed for DevOps teams and successful organizations running 24/7 operations, it ensures real-time, redundant alerts via mobile push, SMS, voice, and email. SIGNL4 integrates with over 185 IT monitoring and management tools, includes built-in on-call scheduling, custom alert actions and supports automated escalations — ensuring the right person always gets the alert. By reducing noise and filtering out non-essential notifications, SIGNL4 helps teams focus on real operational issues, resolve incidents faster, and maintain high service availability across complex infrastructures. SIGNL4 serves as a critical communications system that keeps teams connected and in control when every second counts.
Insights

How SIGNL4 solves common problems in IT operations and monitoring
Immediate incident response without complex software
Of course, it is important that especially critical IT alerts are processed promptly. Even small problems can quickly lead to major failures. Email and dashboards are often the means of choice, as they are brought along by the monitoring tool. However, you need to be aware of the limits of these two methods and allow SIGNL4 to help your digital transformation:
- Location-independent attention-grabbing: Dashboards require constant attention and/or appropriate access, e.g. a PC/monitor. The employees’ freedom of movement is restricted. Alerting via smartphone, call and SMS by SIGNL4 ensures greater flexibility and mobility.
- Email for alerting has several disadvantages: Email alerting is not very concise. Important alerts have the same relevance in a mailbox as an Amazon delivery notification. Tracking (alert acknowledged, resolved or not) is difficult to cumbersome. And assigned responsibility for an incident (takeover by a colleague) is also difficult. SIGNL4 provides a remedy here. Alerts can be acknowledge for clear ownership. Signaling can be adjusted to the severity and other parameters. The status of an alert can be viewed directly, updates are provided in real time.
Temporary alerts and Alert floods
A big classic, which usually leads to important alerts being ignored, overlooked, or overheard when it really counts. SIGNL4 offers effective ways to manage alert floods and generally to keep the number of alerts at bay. Customers confirm that it can reduce the number of false alarms by up to 95%.
- Alerts can be filtered. Distribution rules in SIGNL4 include a powerful filter system allowing to parse content and parameters of incoming data and events (messages from monitoring systems). If the required data are not included, an event is not processed and an alert is not transmitted or triggered.
- Notification profiles in SIGNL4 can be used to control how actionable alerts are signaled. You can create multiple alert categories with different ways of signaling and visualization.
- Distribution rules can also be used to send alerts exclusively to specific teams or team members according to their responsibilities and capabilities.
- Particularly in network environments, there are often brief equipment downtimes or sensor signals that auto-resolve after a few seconds. Such alerts can cause a lot of work and require unnessary attention, because it takes a lot of effort to track the validity of such alerts.
- SIGNL4 can also process a monitoring alert in a third party system via 2-way connectors and its REST API. This means that when an alarm reset occurs in the monitoring system, the alarm is also set to closed in SIGNL4 and alert notifications are stopped. At the same time, the alert remains visible in the log for later analytics. It only takes 5 minutes to leverage integration capabilities provided by SIGNL4.

Handling after-hours alerts
There is a high likeliness of important alerts occuring outside normal business hours. How do you make sure these alerts are not overlooked while keeping employees happy? Sending them to a whole team during nighttime is not a sensible way to do this. Operating a 24/7 NOC is expensive and reserved for large companies. On-call services are a good option, but need a tool like SIGNL4.
- SIGNL4 was developed with IT on-call duty in mind. The integrated, very convenient scheduling of duty times in the browser allows automatic routing to the respective active on-call person (or several) without bothering other employees in their spare time.
- Alerting via multiple channels (push, SMS and call) as well as repeated signaling until acknowledged ensures high reliability when reacting to an important alarm.
- SIGNL4’s comprehensive escalation feature also ensures that alarms are received after all if the on-call person missed the notifications. This is achieved through multi-level escalation within a team or across multiple teams.
Your Resource for Fast remediation
Ultimately, it is also important to solve problems quickly.
- SIGNL4 offers the so-called “remote actions”, i.e. the execution of IT automation scripts (“runbooks”) directly in response to an alarm. SIGNL4 uses HTTP calls to IT automation tools such as Azure Runbooks, and can then execute these runbooks from the mobile app. This way the troubleshooting and problem solving can even be done from the soccer stadium as a customer assured us.