Telegram

1. Get an API token using @Botfather.
2. Store token in <secret-name> Secret and configure telegram integration in argocd-notifications-cm ConfigMap:

apiVersion: v1
kind: ConfigMap
metadata:
  name: argocd-notifications-cm
data:
  service.telegram: |
    token: $telegram-token

1. Create new Telegram channel.
2. Add your bot as an administrator.
3. Use this channel username (public channel) or chatID (private channel) in the subscription for your Telegram integration:

apiVersion: argoproj.io/v1alpha1
kind: Application
metadata:
  annotations:
    notifications.argoproj.io/subscribe.on-sync-succeeded.telegram: username

apiVersion: argoproj.io/v1alpha1
kind: Application
metadata:
  annotations:
    notifications.argoproj.io/subscribe.on-sync-succeeded.telegram: -1000000000000

If your private chat contains threads, you can optionally specify a thread id by seperating it with a |:

apiVersion: argoproj.io/v1alpha1
kind: Application
metadata:
  annotations:
    notifications.argoproj.io/subscribe.on-sync-succeeded.telegram: -1000000000000|2