Why didn't I receive any notifications?
If Oh Dear detected an issue but didn't tell you about it, one of these is almost always the cause:
- No notification channel is configured. Check that you have at least one channel (email, Slack, Teams, SMS, ...) set up at the monitor or team level.
- The channel credentials are stale. Expired Slack tokens, rotated webhook URLs, or changed Telegram groups will silently fail. Send a test notification to confirm the channel is still healthy.
- The relevant event isn't enabled on the channel. Each channel has a list of events it cares about. If "Site down" isn't checked for that channel, it won't fire.
- A maintenance window is active. During a maintenance window, failed checks don't trigger notifications. Double-check the monitor's maintenance schedule.
- The check is snoozed. If you snoozed a check to silence it during an ongoing incident, notifications will resume when the snooze ends. See how snoozing works.
- The channel was automatically disabled. If a channel keeps failing to deliver (for example, an invalid webhook URL), we disable it after a day of errors. See why have my notifications been switched off.
Still nothing after checking all of those? Contact support with the monitor URL and the time you expected a notification. We can look up the exact decision our system made.
