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Mailchimp Email Validation & Data Enhancement

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How to verify and enhance email addresses in Mailchimp with InstantData.

Validating the email addresses on your Mailchimp list or appending demographics to them with our Email Intelligence service is super easy. This article covers importing your Mailchimp audience into InstantData for processing and exporting InstantData results back to Mailchimp.

Importing Your MailChimp Audience

First, login to your InstantData account, and then click the “Import List” button on the top right of the page. Select “Mailchimp” from the choices in the dropdown as shown below.




ID-Servicesview the results on the List Overview page and purchase the data you need.

Exporting InstantData Results to Mailchimp

After purchasing data, it’s time to get your results and put them to use!

You can download the results to your computer for offline analysis or keep them online by exporting them back to your MailChimp account. 

Start by clicking the blue “Get Results” button at the top right of the overview page for your list.


mailchimp update - export results

If you ran Email Validation, you’ll see the option to “Update invalid emails to ‘cleaned’ “.

You also have the option to create a new segment for your list based on the selected values. 

Please note: Enabling this will unsubscribe all the emails with a validation status of “invalid” so that you no longer send email messages to bad addresses, which, of course, improves your email marketing metrics.

After selecting your export options, press the green “Continue” button at the bottom to move to the next step.

But first, a quick note on the options and what each involves.

Email Validation Result Options

If you run Email Validation and select “Update List” in the export options, all of the contacts that are validated will be updated. If you instead choose to create a “New List,” you’ll see the below screenshot of Email Validation options next.

This “New List” option allows you to choose the results you want to go into the new list. You can hover over each option to see a description of it on the right pane, and if you want even more detail, check out our handy help article on Email Validation result options.

Mailchimp update - validation

Here, you can either choose to have:

  1. all the demographics and behavioral data you purchase exported to MailChimp by selecting the “All Results” option


  2. specific, chosen data fields exported by clicking the “Customize” toggle and selecting your desired data fields.

Curious about the data available? Learn more about our Email Intelligence result options.

Starting Your Export

To finish the process, click the green “Export Results” button after making your data selection, and you’ll be taken to a progress screen as we send your data to MailChimp. Depending on the size of your list, it may take a few minutes to complete.

You can either wait for the process to complete or we’ll send you an email to notify you when it’s done.

The fields created by InstantData will show up in the “Profile Information” section of the contact record. All fields from InstantData will start with the prefix “TD ” to avoid overwriting any existing fields you may have with the same name.

mailchimp fields

We hope you enjoy your data!