📨ESP Integration

Add MailAdx open-time ads to your Mailmodo newsletters

Mailmodo supports custom HTML in email templates. Add MailAdx's ad tag to your Mailmodo campaigns with the subscriber email hash merge tag for open-time ad decisioning.

Why add MailAdx to Mailmodo?

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 Mailmodo

  1. 1

    Create your MailAdx publisher account

    Sign up for a free MailAdx account. Create your first ad placement in the Publisher Portal.

  2. 2

    Access Mailmodo's HTML block

    In Mailmodo's template editor, add a custom HTML block where you want the ad to appear.

  3. 3

    Add the email hash merge tag

    Mailmodo uses mustache-style merge tags for contact properties. Store the SHA-256 email hash as a contact attribute and reference it in the HTML block.

  4. 4

    Paste the MailAdx ad tag and test

    Paste the ad tag with your merge tag substituted, send a test, and verify the impression in your Publisher Portal.

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 -->

Mailmodo + MailAdx: common questions

Does MailAdx work with Mailmodo's AMP email format?

MailAdx serves ads via standard HTML image requests — the open-time serving works in both standard HTML emails and AMP-compatible email clients that support image rendering.

Ready to monetize your Mailmodo newsletter?

Free to start. No revenue share. Direct advertiser relationships from day one.

No credit card required
Setup in 30 minutes
Dedicated onboarding