Alerts notify you about all important changes that happen on your website. By default, you receive them via email, but you can also get them via Slack (more about the Slack integration here).

Alert types, definitions, and incidents

ContentKing Alerts consist of three different concepts: Alert types, Alert definitions, and Alert incidents.

Alert types

Alert types are the types of changes that you can be alerted about by ContentKing.

At this moment, ContentKing offers these alert types (we are continuously extending this list with new alert types):


  • Page titles changed
  • Page titles removed
  • Meta descriptions changed
  • Meta descriptions removed
  • H1 headings changed
  • H1 headings removed


  • Links became broken
  • Hreflang implementation changed
  • Canonical links changed
  • Canonical link target became non-indexable
  • Off-page canonical links on non-indexable pages


  • Pages changed type
  • Pages became non-indexable


  • Analytics tracking removed
  • Visual Analytics tracking removed


  • Robots.txt became not accessible
  • Robots.txt changed
  • Non-canonical hostname domain variant stopped redirecting
  • Non-canonical protocol domain variant stopped redirecting
  • SSL certificate expiring soon


  • Pages entered a segment
  • Pages left a segment
  • Pages entered or left a segment

Alert definitions

Alert definitions are specific configurations of an alert.

Apart from an alert type (see the list above), a definition also includes other settings like scope, sensitivity, recipients, and Slack (see Configuring Alerts).

This means that for one alert type, there can be multiple definitions with different configurations.

A screenshot showing multiple alert definitions for the same alert type being configured in ContentKing

Please note that it is not possible to create multiple definitions for the Platform alert types, as those can only apply to the whole website and have universal settings.

Alert incidents

Alert incidents refer to the specific events on the website that you are alerted about.

You can always find active incidents (incidents that are currently happening on the website) and past incidents when going to Alerts in ContentKing.

A screenshot showing active and past incidents displayed on the Alerts screen in ContentKing

Alerts vs. Tracked Changes

Alerts and Tracked Changes are two distinct features of ContentKing.

The Tracked Changes feature allows you to view all changes that ContentKing has detected on your website. Depending on your plan, you can track changes historically up to 60 months back (see our Pricing).

Alerts are proactively sent by ContentKing when important changes are happening on the website, allowing you to react to these changes in time. Alerts are sent if the type of the change and the impact it has on the website or selected segment meet the alert configuration.

The best practice for the use of ContentKing Alerts is to not get alerted about every single change that is being detected on the website, as not all changes are important enough to require an alert.

If you need data about all changes that ContentKing has detected on the website, you can always get it using Tracked Changes.

When do alerts open and close?

An alert opens when an incident occurs on the website that triggers the alert based on the alert definition.

You can always find all the incidents that ContentKing is currently detecting on the website in the Active incidents section of the Alerts screen.

When an incident isn’t active anymore, the alert closes. There are two reasons why an alert closes:

  1. The problem is resolved (or the change is reverted) on all affected pages. In this case you receive a second email and Slack notification explaining that the alert was resolved.
  2. No changes to the alert incident (newly affected or resolved pages) are detected for 24 hours.

When an alert closes, it’s not being updated anymore and the incident moves from Active incidents to Past incidents in ContentKing. If ContentKing then finds a new page with that change, a new alert opens.

What does an alert look like?


When you receive an alert via email, it will look like this:

Screenshot showing an email alert sent by ContentKing when pages changed type

Certain alert types also offer additional information about the changes.

For example, in the screenshot above you can see that from the 2,231 pages that changed type, 658 were redirected, 812 were removed, and 761 returned server errors.

When an alert is resolved, the email looks like this:

Screenshot showing an email sent by ContentKing when an alert is resolved


When you receive an alert via Slack, it will look like this:

Screenshot showing a Slack notification sent by ContentKing when an alert is resolved

When an alert is resolved, the Slack notification looks like this:

Screenshot showing a Slack notification sent by ContentKing when an alert is resolved

Rate our alerts to help us make them even more useful

In the second email and the second Slack notification that is sent when an alert is resolved, you can also leave us feedback about the alert.

Your feedback is extremely valuable to us as it allows us to make the alerts even better and more useful for you.

You can also leave feedback about the alerts on the Alert incidents screen in the app.

Rate our alerts to help us make them even more useful

Configuring alerts

If you want to learn how to configure the ContentKing Alerts, you can continue to Configuring Alerts.

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