Monetize your Klaviyo email lists with newsletter ads

How to integrate MailAdx with Klaviyo

1. 1

   Set up your MailAdx publisher account

   Create a free account at mailadx.com/signup. After approval, access the Publisher Portal to create your ad placements.

2. 2

   Create an ad unit and copy the tag

   In Publisher Portal → Ad Units, create a placement with your preferred format and floor CPM. Copy the HTML ad tag.

3. 3

   Add an email hash property to Klaviyo profiles

   Klaviyo doesn't expose a native SHA-256 email hash merge tag by default. You'll need to add a computed property or use Klaviyo's built-in {{ person.id }} or pass the email hash as a profile attribute via Klaviyo's API. Alternatively, the integration can use Klaviyo's email variable and hash it via a template filter.

4. 4

   Insert the ad tag via HTML block

   In your Klaviyo template editor, add an HTML component. Paste the MailAdx ad tag, substituting the email hash variable with your Klaviyo property syntax.

5. 5

   Test with a preview send

   Send a preview to yourself. Open the email and confirm the ad loads. Check the Publisher Portal for the test impression.

<!-- MailAdx ad tag — decision runs at open time -->
<a href="https://mailadx.com/api/v1/serving/click?pub=YOUR_PUB&pk=header&eh={{EMAIL_SHA256}}"
   target="_blank">
  <img src="https://mailadx.com/api/v1/serving/display?pub=YOUR_PUB&pk=header&eh={{EMAIL_SHA256}}&w=600&h=100"
       width="600" height="100" alt="" />
</a>
<!-- Replace {{EMAIL_SHA256}} with your ESP's email hash merge tag -->