Along with your form data, Unbounce will also pass along three key pieces of information to your MailChimp list:

1. The Page ID of the Unbounce page that captured the lead

2. The Variant (letter) that the user saw if your page has more than one variant

3. The date that the lead was captured (for triggering autoresponders, which is important if you want to immediately send an email to someone who has signed up on your list)

These three data values will only be received in your list if you have set up the fields in MailChimp.

Setting up the custom fields in MailChimp

1. Log into your MailChimp account

2. Click on the "Lists" tab

3. Select the "Forms" link for the list that you're working with

4. Now you need to add 3 new fields to the form (which will add the fields to your list). For the first field click on "Text" in the sidebar on the left.

5. Give this field the following values:

   • Field Label: Unbounce Page ID

   • Field Tag: UBPAGEID

   • Field Visibility: hidden (This is very important otherwise your users will see these details in their Welcome Email)

   You should see the following in the sidebar:

   

    

6. Click the Save Field button and repeat this process for a second Text field with the following details:

   • Field Label: Unbounce Variant

   • Field Tag: UBVARIANT

   • Field Visibility: hidden

7. The last field you need to add will be a "Date" field.   When adding the field, make sure you click on "Date" first:

   

   Then update the date field with the following details:

   • Field Label: Unbounce Submitted Date

   • Field Tag: UBDATE

   • Field Visibility: hidden

8. Now your 3 custom fields are set up and you should start to see these values populated in your lists with new leads. You form should look something like this:

   
   

Now that you're receiving this new data with your leads, you might be interested in:

• Segmenting a MailChimp campaign based on Landing Page data
• Triggering Autoresponders for new Leads