Alert Channels

Unseenr supports 21 notification channels for alerting you when errors occur or monitors go down.

Available Channels

Channel	Plans
Email	All plans
Discord	Starter+
Webhook	Starter+
Slack	Pro+
Telegram	Pro+
ntfy	Pro+
Gotify	Pro+
Google Chat	Pro+
Mattermost	Pro+
Rocket.Chat	Pro+
Pushover	Pro+
Pushbullet	Pro+
Bark	Pro+
Apprise	Pro+
Resend	Pro+
Microsoft Teams	Business+
PagerDuty	Business+
OpsGenie	Business+
Matrix	Business+
Twilio SMS	Business+
WeCom	Business+

Alert Limits

Plan	Max Alert Configs
Free	1
Starter	3
Pro	10
Business	999
Scale	2,000
Platform	10,000

Configuration

Each alert configuration includes:

• Type: The notification channel
• Target: Channel-specific destination (webhook URL, email address, channel ID, etc.)
• Min Level: Minimum severity to trigger (DEBUG, INFO, WARNING, ERROR, FATAL)
• Cooldown: Minimum minutes between alerts for the same issue (1 to 10,080 minutes / 7 days)
• Enabled: Toggle alerts on/off without deleting the configuration

Webhook Configuration

Webhooks send a POST request to your specified URL with a JSON payload containing the event details.

HMAC Signing

Webhook alerts support HMAC-SHA256 signing. When configured, each webhook request includes a signature header that you can verify to ensure the request came from Unseenr.

Email Daily Limits

To prevent email flooding, email alerts have daily limits per plan:

Plan	Emails / Day
Free	10
Starter	20
Pro	50
Business	200

Alert Types

Unseenr sends alerts for:

1. New error events: When a new issue is created or an existing issue receives a new event (respecting cooldown)
2. Uptime monitor down: When a monitor transitions from UP to DOWN
3. Uptime monitor recovery: When a monitor transitions from DOWN to UP
4. Quota warnings: When event usage exceeds 75% of your quota