# Alert

Category: [Monitoring & Alerts](https://seo-geo-glossary.com/en/glossary/category/monitoring-alerts/) › [Alerts & thresholds](https://seo-geo-glossary.com/en/glossary/category/monitoring-alerts/alerts-thresholds/) · Also known as: Benachrichtigung

An **alert** is an automatic notification that fires when a monitored value meets a condition set in advance. In SEO monitoring, alerts report things such as a page no longer being reachable or a change to the robots.txt.

## How do alerts work?

A monitoring system checks data at set intervals and compares it with the last state or with a threshold. If the condition is met, a message goes to the configured recipients, usually by email and with some tools also by Slack. The WordPress plugin AIOSEO, for example, checks for a noindex on the homepage and for failing robots.txt or XML sitemap loads, sends at most one alert per issue per day and can notify by email or Slack. Ahrefs offers alerts for new and lost backlinks, web mentions and keyword ranking changes.

An alert is only as good as its rule. If conditions are too broad, many messages pile up and get ignored (assessment).

## Difference to Google Alerts

Google Alerts is a separate service that emails you when new results for a topic appear in Google Search. It watches mentions on the web. Search Console also sends emails, and users choose which message types they receive in the email settings.

## Example

A monitor checks the robots.txt every day. When `Disallow: /` appears, the SEO team gets an email saying the file has changed. The example is invented.

*Diagram: Monitoring: measure, compare, alert.* Monitoring loop based on practice: fetch again, compare with the previous state, check a rule or threshold. An alert follows only for a relevant deviation, then review and fix. This is not a standard; each team sets its own interval and rules.

## Related terms

- [SEO monitoring](https://seo-geo-glossary.com/en/glossary/seo-monitoring/index.md)
- [Change monitoring](https://seo-geo-glossary.com/en/glossary/change-monitoring/index.md)
- [Website monitoring](https://seo-geo-glossary.com/en/glossary/website-monitoring/index.md)
- [Uptime monitoring](https://seo-geo-glossary.com/en/glossary/uptime-monitoring/index.md)
- [Google Search Console](https://seo-geo-glossary.com/en/glossary/google-search-console/index.md)

## Sources

- [SEO Alerts - AIOSEO documentation](https://aioseo.com/docs/seo-alerts/)
- [Alerts - Ahrefs](https://ahrefs.com/alerts)
- [Create an alert - Google Search Help](https://support.google.com/websearch/answer/4815696?hl=en)
- [Email settings - Search Console Help](https://support.google.com/webmasters/answer/140528?hl=en)

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Last updated: October 8, 2026
URL: https://seo-geo-glossary.com/en/glossary/alert/