Notification Types
Updated on March 31, 2026
Understand how notification severity works in Signalgrid
Signalgrid notifications support different severity levels to help categorize alerts and events.
These notification types can be used in both the Push API and the Activity API. They control how notifications appear inside the Signalgrid apps and the web interface.
Available Notification Types
Type
Color
Typical Usage
CRITRed
Critical alerts such as outages, failures, or incidents.
WARNYellow
Warnings or potential issues that may require attention.
INFOBlue
Informational events such as deployments or system updates.
SUCCESSGreen
Successful operations, completed tasks, or positive results.
These types are primarily used for visual categorization.
Notifications appear with different colors in the Signalgrid mobile apps
and the web interface,
making it easier to quickly identify the severity
of an event.
Critical Notifications
Critical notifications behave differently across platforms. On iOS, Signalgrid uses Apple's Critical Alerts capability which can bypass silent mode and Focus modes, but this feature is regulated by Apple and intended only for important alerts. On Android, critical notifications are delivered with high priority and may bypass Do Not Disturb depending on device settings. Web notifications do not support critical delivery and always follow normal browser notification rules. No way around that.
Severity vs Critical Delivery
Setting the notification type to CRIT does not
automatically deliver the notification as a critical system alert.
Critical delivery is controlled by the critical parameter.
When critical=true is used:
- iOS delivers the notification using Critical Alerts
- Android may bypass Do Not Disturb
This parameter can be used regardless of the severity of the notification — sometimes you really need to know about good news too.