Tracking the referral source when the email box is clicked

document.referrer is a JavaScript method that returns the URI of the page that linked to the current page. If the user navigated directly to the page, for example through a bookmark, the value returned by document.referrer will be an empty string.

You can find more information about this on https://developer.mozilla.org/en-US/docs/Web/API/Document/referrer.

My question is:

When clicking on links within emails in a browser, we often land on pages where document.referrer is empty. This has been observed with various email providers when clicking on ads or URLs in newsletters.

Is it safe to assume that this behavior applies to all email providers, or are there exceptions?

I want to differentiate visitors who clicked on links from customer emails, but I'm not sure how to do this precisely.

In other words, if document.referrer is not empty, does that mean the visitor did not come from an email link (e.g., Yahoo, Google, etc.)?

javascriptemailwebbrowserdocument

Answer №1

Although it is possible to manipulate the document.referrer value to imitate another website, manipulating this value from an email link is not as straightforward since it is not loaded by a web page in the browser.

UPDATE: There is a way to mimic a document.referrer value when clicking on an email link - you would redirect the user to a different web page first, which could supply the referrer value, before sending them to the final destination page. However, this scenario is unlikely for your specific situation.

In conclusion: If the referrer value is already set, and no one is attempting to falsify it, then it did not originate from an email link.

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