MailAdx — The complete newsletter ad platform
MailAdx is the only platform that unifies newsletter ad supply (SSP), demand (DSP), and real-time decisioning (ad server) under a single dashboard. Stop stitching together third-party tools and run your email monetisation from one place.
SSP + DSP in one account
Most ad tech forces you to maintain separate publisher and advertiser accounts across different platforms. MailAdx unifies both sides. Your editorial team manages placements and floors in the Publisher Portal while your sales team runs direct-deal campaigns in the same dashboard. Finance gets consolidated billing. Operations gets a single API. Everyone benefits.
- Publisher portal with placement builder and floor management
- Advertiser self-serve or managed campaign creation
- Shared audience data and targeting segments
Ads decided when readers open
MailAdx runs the full waterfall in real time when a subscriber opens your email. You paste a dynamic image URL in your template once; when the email client fetches it, MailAdx auctions inventory in under 5ms and returns the winning creative. Impressions count only for genuine opens — advertisers pay for real exposure, and pacing caps apply at the moment of delivery.
- OpenRTB-compatible waterfall with direct-sold prioritisation
- Sub-5ms decision latency at open time
- Gmail nonce bypass and Apple MPP labeling built in
Everything you need
All the features, none of the complexity.
SSP inventory management
Define placements, set floors, and manage publisher-side ad units with a drag-and-drop builder.
DSP campaign management
Create orders, upload creatives, set targeting, and control daily budgets from one dashboard.
Real-time open-time ad server
Paste an ad tag in your ESP template — MailAdx runs the waterfall when subscribers open your email, in under 5ms.
Unified reporting
Impressions, clicks, fill rate, eCPM, and billing all in one place — no spreadsheet stitching required.
22+ ESP integrations
Mailchimp, Klaviyo, Beehiiv, SendGrid, and custom pipelines — merge tag + ad tag, no webhooks required.
Privacy-first by design
No JavaScript in the inbox — email-native image URLs with honest MPP and Gmail proxy handling.
“We replaced three separate tools with MailAdx and cut our ops overhead by 60%. The waterfall logic alone saves us four hours a week.”
Start monetising your newsletter today
Join 150+ newsletter operators using MailAdx to run a full ad stack — without the complexity.