Why we built SIGNL

A note from the team. The state of advertising and content in 2026, and what we plan to do about it.

The advertising and content world has gotten loud. Every week brings a new AI tool, a new platform behavior, a new attribution debate, a new claim that the old playbook is dead. Some of it matters. Most of it does not. The hard part is telling the difference, and most newsletters in this space are not helping.

That is the gap SIGNL is here to fill. We are building it for two groups of people who are getting hit hardest by the noise.

Advertisers

Media buyers, performance marketers, brand teams, and agency leads are being asked to do more with less while the measurement ground shifts under them. AI Overviews are reducing click-through on top-ranked content by 58 percent compared to a year prior, according to Ahrefs research cited by Jasper. Apple Mail Privacy Protection has made open rates structurally less reliable. Cookie deprecation has reshaped targeting. Meanwhile, Google reports that advertisers generated nearly 70 million creative assets through Gemini inside AI Max and Performance Max in Q4 2025 alone, a 3x year-over-year jump. The question is no longer whether to use AI in advertising. It is which workflows actually move metrics, which ones add risk, and where the budget should sit.

Creators and publishers

Newsletter operators, independent journalists, and creator-led media are sitting on one of the most valuable inventory types in the market. Beehiiv reported paid newsletter subscription revenue jumped 138 percent year over year, from 8 million dollars in 2024 to 19 million in 2025. 1440 Media is doing roughly 25 million dollars a year in newsletter ad revenue. The opportunity is real, but the operational reality is brutal. Most creators are managing sponsorships in spreadsheets, juggling three to four ESPs, and getting commoditized by ad networks that treat them as interchangeable inventory.

What SIGNL covers

Each issue we will dig into a small number of topics that matter for both sides of this market.

• AI tooling that has earned its place in real workflows, not the demo reel.
• How discovery is changing as ChatGPT, Perplexity, Gemini, and Google AI Overviews reshape where attention starts.
• Email and newsletter operations: deliverability, identity, send-time data, monetization stacks.
• First-party data, identity resolution, and what happens to targeting in a post-cookie environment.
• The economics underneath the noise: CPM benchmarks, take rates, attribution shifts, channel mix.

We will cite our sources every time. We will tell you when something is hype, when something is real, and when the honest answer is that nobody knows yet. If a tool or tactic does not survive contact with the data, we will say so.

SIGNL is published by the team at PatternIQ, an AI-powered email advertising platform connecting newsletter publishers with advertisers through an identity graph and a relevance engine called InboxMatch. We see both sides of the market every day. That perspective informs the newsletter, but we are not writing it as a sales channel. The goal is to be the one inbox that earns its keep, week after week.

Welcome aboard.