notifier
Noun
Meaning
notifier (plural notifiers)
A person or thing which notifies or provides notification.
The e-mail notifier displays a small icon in the notification area when mail is received.
Synonyms
Examples
Bugsnag PHP Notifier docs for more information about the full capabilities of the notifier.
I used to have a "gmail notifier" program that worked just fine till recently.
But my infection notifier warns me the Bloodsuckers are already rallying.
In an interactive Smalltalk system the default implementation of doesNotUnderstand: is one that opens an error window (a Notifier) reporting the error to the user.