Two Audiences, One Newsletter
A healthcare-adjacent SaaS company sends one weekly newsletter to a combined list of 60,000: about 45,000 are frontline clinic administrators who care about workflow tips and regulatory deadlines, and about 15,000 are IT/security staff who care about integrations, uptime, and compliance posture. Open rate is 22%, click rate 1.8%, and unsubscribes spiked 40% last quarter. A survey of 400 subscribers shows both groups say the content 'isn't for me.' The team has one writer and a weekly cadence. Leadership wants to keep the single newsletter because 'splitting the list halves our reach.'
1. Diagnose the engagement problem and evaluate the 'splitting halves our reach' argument.
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The survey directly confirms an audience-fit problem: one message is trying to serve two groups with different jobs, so each group sees roughly half the issue as irrelevant. That dilutes relevance, which drives the unsubscribe spike and low click rate. The 22% open rate is a symptom, not a cause.
The 'splitting halves our reach' argument is a vanity-reach fallacy. Reach is not the number of inboxes touched; it is the number of relevant readers who engage. Sending one diluted message to 60,000 produces low relevance for everyone and rising churn. Two targeted messages to the same 60,000 people (segmented) do not reduce the audience - they reach the same people with more relevant content. The real constraint is the one writer, not the list size.
2. Given one writer and a weekly cadence, propose a segmentation approach that improves relevance without doubling the workload.
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Use a modular newsletter rather than two fully separate products:
- Build a shared core (company news, one broadly relevant item) and two audience-specific modules - a workflow/regulatory block for administrators, an integration/security block for IT.
- Use list segmentation or dynamic content so each segment receives the core plus its own module. The writer writes one core plus two short modules, not two full issues.
- Alternate or weight modules by audience size if time is tight (e.g., administrators get the larger module weekly; IT gets a focused module on a defined cadence).
- Let subscribers self-select their interest at signup and in the footer to keep segments accurate.
This raises relevance for both groups while keeping the writing load close to current.
3. What would you measure to know whether segmentation is working, and what would you tell leadership?
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Measure per segment, not blended:
- Open and click rate by segment (watch for the blended average hiding divergence).
- Unsubscribe rate by segment - the key health signal, since it spiked 40%.
- Click-through to segment-relevant destinations (e.g., regulatory pages vs. integration docs) as a relevance proxy.
- Optional: a short relevance question in the footer.
Tell leadership: report reach as engaged reach (relevant readers who open/click), not raw sends. Frame the change as protecting the list from churn rather than shrinking it: the same 60,000 people get more relevant mail, and the metric to watch is unsubscribe rate falling while click rate rises. Set a review point (e.g., one quarter) to confirm before expanding the model.