Argo CD Notifications continuously monitors Argo CD applications and provides a flexible way to notify users about important changes in the applications state. The project includes a bundle of useful built-in triggers and notification templates and aims to integrate with various notification services such as ☑ Slack, ☑ SMTP, Telegram, Discord, etc.
The Argo CD Notifications is not the only way to monitor Argo CD application. You might leverage Prometheus metrics and Grafana Alerts or projects like bitnami-labs/kubewatch and argo-kube-notifier. The advantage of Argo CD Notifications is that it is focused on Argo CD use cases and ultimately provides a better user experience.
Go to the complete documentation to learn more.