We scale
newsletter subscribers.
We earn only
when you earn.
We capture brand-aware visitors on your site, warm them carefully into your newsletter, and split every ad dollar 50/50.
The operating layer
behind your newsletter.
From pixel installation to revenue reporting, MMG runs the layer between your site and your subscribers.
List Scaling
We capture brand-aware visitors on your site through pixel-based identity resolution. Contacts are validated, deduplicated against your existing list, and filtered for engagement signal before they ever enter warm-up.
Data Warm-Up at Scale
New contacts ramp gradually into your sends. ISP reputation stays clean, complaint rates stay low, and your sender domain stays trusted. We monitor every cohort daily and scale volume only when deliverability confirms.
Newsletter Monetization
We place high-yield direct and programmatic ad demand into your sends. Ad operations, demand sourcing, and revenue reporting handled end-to-end — you keep 50% of every dollar.
Publisher Analytics
Mainline's analytics platform gives you real-time visibility into list growth, deliverability, engagement, and revenue. Your ESP accounts (Aigeon and others) layer in alongside it. Not a spreadsheet, not a monthly PDF — a live view of your account.
ESP Integration
We integrate with Aigeon, SendGrid, beehiiv, and most major ESPs. No forced migration. No platform switch. Your sending stack stays intact — our infrastructure connects to it.
Multi-Brand Operations
We run portfolios, not just single accounts. Publishers with multiple newsletters get unified analytics, consolidated revenue reporting, and operational discount tiers built around the scale of the relationship.
Subscribers in.
Revenue out.
No risk in between.
You don't bring us a list. We grow it for you, using visitors already engaging with your content.
Install the Pixel
We add a lightweight pixel to your site that identifies brand-aware visitors as they engage with your content. Adjustable engagement thresholds keep bots and accidental visitors out of the funnel.
Capture & Validate
Anonymous visitors become identified contacts. Every one is validated against suppression lists and deduplicated against your existing subscribers before entering warm-up.
Warm Into Your Newsletter
Contacts ramp gradually into your existing sends. We monitor deliverability, manage daily volume, and protect your sender reputation while your subscriber base grows.
Earn From Every Send
We monetize your sends through our direct and programmatic ad stack. You earn 50% of every ad dollar, paid monthly. As your list scales, so does your revenue.
Larger lists mean more send capacity. ISP trust grows with your track record, so MMG can ramp new contacts faster — creating compounding growth that accelerates over time.
Analytics built
for publishers.
Every MMG publisher gets access to a real-time analytics dashboard — not a spreadsheet, not a monthly PDF.
Revenue tracking — gross revenue, your monthly share, and per-brand earnings all in one view
Deliverability health — ISP-level open rates, complaint tracking, and inbox placement signals
Audience intelligence — new vs. recycled contacts, engagement cohorts, and cross-publisher overlap
Signal-driven alerts — automated momentum, opportunity, and attention flags for every brand
Portfolio view — compare performance across all your properties in a single command center
Operators,
not vendors.
No platform fee. No monthly minimum. No per-send charge. Publishers keep 50% of every ad dollar their list generates.
Zero Cost to Grow
We charge nothing to scale your list. No platform fee, no monthly minimum, no per-contact charge. Revenue starts flowing once ads run in your sends.
Predictable Economics
50/50 of gross ad revenue, every month. No hidden fees, no platform charges, no minimums to chase. The math is the math — your share scales directly with your audience and engagement.
Full Transparency
No black-box reporting. Publishers see the same revenue, open-rate, deliverability, and list-growth data MMG operators see, in real time.
Founder-Led & Independent
We're a bootstrapped operator, not a PE-backed platform. Your account gets direct attention from the team that built the infrastructure.
Ready to start
earning?
Tell us about your publication and list. We'll review your fit and respond within one business day.