What cookies does Groundhogg create?

Groundhogg uses cookies to provide essential functionality to the end-user and ensure complete and correct customer journeys.

Below is a list of cookies that Groundhogg creates to create better and more secure user experiences.


This cookie is essential to Groundhogg functionality in many cases. It enables Groundhogg to know who is currently browsing the site and associate site actions to the correct contact profile.

This cookie is set in the following situations:

  • A visitor fills out a form on your website and subscribes to your list. The form must be a Groundhogg form itself or connected to Groundhogg through a form integration.
  • A visitor clicks a tracking link in an email or text message sent by Groundhogg.
  • A visitor makes a purchase through one of our e-commerce integrations.

The data in the cookie is encrypted with a unique site key so that it can never be exploited by browser-based malware.

The cookie can contain the following information:

  • The visitor's Contact ID (always)
  • Event ID (if the cookie was generated in relation to a specific event)
  • Email ID (if the cookie was generated in relation to a specific email)
  • Source (if the cookie was generated via a specific medium. Ex. "Email")
  • Action (if the cookie was generated via a specific action. Ex. "Link click")

This cookie is unset in the following situations:

  • The visitor requests their profile be erased via the preferences center.

This cookie is necessary for the following core features:

  • Personalizing pages on the frontend
  • Auto filling forms
  • The "link click" benchmark when used on the frontend
  • The email preferences center

This cookie is necessary for the following features in our extensions:

  • Showing personalized contracts on the frontend
  • Content restriction based on tags
  • The "page visited" benchmark
  • Superlinks
  • Booking Calendar
    • Modifying appointments
    • Prefilling with existing information
  • WooCommerce
    • Associating orders to funnels and emails
    • The "Add to cart" benchmark
    • The "Empty cart" benchmark
  • Easy Digital Downloads
    • Associating orders to funnels and emails
    • The "Add to cart" benchmark
    • The "Empty cart" benchmark

This cookie can be considered essential as it is used to deliver expected functionality on behalf of the visitor.


This cookie stores an encrypted key in the browser to signify that the current visitor has permission to modify the email preferences of the tracked visitor from the groundhogg-tracking cookie.

This cookie is set when:

  • Clicking an unsubscribe link in an email sent by Groundhogg
  • Requesting a special link to manage your preferences from the preferences page.


The groundhogg-lead-source cookie is automatically added for all new visitors to the site.

What this cookie does is simply keep track of where the visitor came from.

For example, if you click a link from Facebook.com to your website, the groundhogg-lead-source cookie will be set to the value of Facebook.com

It does this simply by accessing information that is readily available from the browser. This information does not come from the server, but rather directly from the browser via javascript. Thus the visitor's data never touches your server.

To verify, simply open the JS console on any page and type in...


This cookie does not store information in the database. The cookie only saves the lead source to the visitor's browser.

If the visitor subscribes to your list via submitting a form or another method, only then will the information in the groundhogg-lead-source cookie be saved and processed.

The groundhogg-lead-source cookie's information is inaccessible to Groundhogg unless the visitor subscribes to the list.


This cookie keeps track of the page visits of those who have approved use of cookies. If they
haven’t logged in then it keeps track of each page they visit and a timestamp in their browser. If
they signup or login then those cookies will be stored in the record of that person.

If the person is logged in then in real time it shows the pages they visit in their file (underneath
page visits).


Within Groundhogg you can create forms, and this cookie tracks which forms a visitor has seen.
This way you can see if someone comes back to a form many times and hasn't filled in, there
maybe a reason so you can contact them and figure out why.

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