Your email service and your CRM platform hold information about your users that you can tap into to send visitors to different page variations. For this, you will need to use the targeting condition  "query string parameter" to create your target audiences. 


To keep it hands-on, let's assume the following scenario: 

We're the marketer of the flower delivery service myflowers.com. In Drip, we store information about our customers' purchase preferences.
For this, we use the merge tag {{ preference }} and possible values are "potted_plants", "roses" or "unknown". Now, we plan a special Mother's Day email campaign that sends our customers to different versions of our homepage based on their purchase preferences.

Instead of sending everyone to this page: 

We want to send them to one of these variations: 


Here's what we need to do: 

1. Add the merge tag to our email link

To send information through from your email (or your signup form, or your ad) onto your page, you need to use so-called URL parameters. The most common URL parameters are UTMs but in this case, the merge tag becomes the URL parameter. This results in the following link: http://www.myflowers.com/?preferences={{ preferences }}
Once a customer clicks on the link, Drip will populate the tag with the value set for this customer (e.g. http://www.myflowers.com/?preferences=roses)



2. Create and edit our variations:


We need two variations of our original page - one promoting potted plants, one promoting rose bouquets. The original page will serve as the fallback. 


3. Define the audiences of our variations:


Here's where query string parameters come into play. So far, we've learned that the merge tag in Drip can have the value "potted_plants" or "roses" (or "unknown").
We also know that the query string we use in our URL is called ?preferences.
This results in the following targeting rules: 

  • Variation Potted Plants: query string parameter is set "preferences=potted_plants"
  • Variation Roses: query string parameter is set "preferences=roses"

Now - depending on the value stored in Drip - our customers will either see the original page, the variation "Potted Plants", or "Roses" when the click on our email link.

To summarize: Query string parameters are a great way to add user-specific information to your URL. You will typically find them in email links, signup forms, search results, and - most commonly - as UTM parameters. 


If URL parameters are not a good targeting option for you, consider using cookies. Writing one line of Javascript, you can even create your own personalization cookies. 

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