📊ESP Integration
Integrate MailAdx with Campaign Monitor newsletters
Campaign Monitor supports custom HTML email sections. Add MailAdx's open-time ad tag to your Campaign Monitor templates using the subscriber personalization variable for email hashing.
Why add MailAdx to Campaign Monitor?
Open-time ad serving — impressions count only on genuine opens
No revenue share — flat per-impression fee, you keep the rest
Direct-sold + programmatic demand in a single waterfall
Custom price floors per ad placement
Real-time delivery dashboard and per-send reporting
Native ads (composite PNG) and standard banner formats
How to integrate MailAdx with Campaign Monitor
- 1
Create your MailAdx publisher account
Sign up and create an ad placement in the Publisher Portal.
- 2
Add a custom HTML section to your Campaign Monitor template
In Campaign Monitor's template builder, add a custom HTML block. Campaign Monitor uses the syntax [personalization tag] for contact properties.
- 3
Store and reference the email hash
Add a custom field for the SHA-256 email hash in Campaign Monitor. Import or update subscriber records with the hash value. Reference it in your HTML block.
- 4
Test and activate
Send a test email and verify the ad loads on open.
email-template.html
<!-- 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 -->Related resources
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