If you’re running an online business solo or with a small team, there’s a good chance you’re paying for at least two analytics tools. Maybe Google Analytics for traffic, a heatmap service for behavior, and whatever your newsletter platform includes. You check them weekly, feel vaguely informed, and move on.
Here’s the problem: most of those metrics don’t connect to money. Pageviews don’t pay invoices. Session duration doesn’t predict churn. Bounce rate tells you almost nothing about whether someone will subscribe, buy, or share.
After working with dozens of operators who’ve scaled past $10k/month, the pattern is clear: the ones who move fastest track three metrics obsessively and ignore almost everything else.
The three metrics that actually matter
Metric one: new email subscribers per week. Not total list size—new additions. This number tells you whether your acquisition engine still works. If it drops two weeks in a row, you have a traffic problem, a conversion problem, or both. Track it in a spreadsheet, not buried in a dashboard. Write it down every Monday.
Metric two: revenue per subscriber per month. Take last month’s revenue and divide by average list size. For a course creator with 2,000 subscribers who made $4,000 last month, that’s $2 per subscriber. For a sponsored newsletter with 8,000 readers earning $3,200, it’s $0.40. This number tells you whether you’re monetizing or just growing a list. If it’s under $0.50 and you’re trying to make this a business, you need to sell something.
Metric three: unsubscribe rate per send. Not the pretty monthly average your ESP shows you—the raw number every time you hit send. ConvertKit, Beehiiv, and MailerLite all surface this in the broadcast report. If your rate jumps above 0.5% on a single send, you either wrote something polarizing (sometimes worth it) or your content drifted off-topic (never worth it). Track it per email, not per month, because monthly averages hide the problem sends.
What to stop tracking
Pageviews, unless you sell ads that pay CPM. Time on page, unless you’re debugging a specific UX problem. Heatmaps, unless you’re actively A/B testing a landing page this week. Social media follower count, unless a brand is paying you per impression and auditing your reach.
These aren’t bad metrics. They’re just not decision metrics. They don’t tell you what to do next. And if a number doesn’t change your behavior, it’s decorative.
The tool stack that actually works
You don’t need a $500/month analytics suite to track three numbers. Here’s what works:
- A spreadsheet. Google Sheets, Excel, Notion database—doesn’t matter. One row per week. Three columns. Update it Monday morning.
- Your email platform’s native dashboard for subscriber and unsub data. You’re already paying for it.
- A single revenue tracker. Stripe’s dashboard if you sell digital products. A bookkeeping tool like Wave (free) if you mix income sources. One source of truth for the revenue number.
If you’re currently paying for Heap, Mixpanel, Hotjar, or a similar tool and you’re under $5k/month in revenue, cancel it. Put the $50–$200/month toward a better welcome sequence or a freelance editor. Those will move the three metrics. Another dashboard won’t.
When to add a fourth metric
Once you’re past $10k/month and you have a repeatable acquisition channel, you can afford to track one lever inside that channel. If SEO drives 60% of your traffic, track keyword rankings for your top ten posts. If Twitter drives your growth, track link clicks per post (not likes—clicks). If you run a paid funnel, track cost per subscriber.
But don’t add a fourth metric until the first three are in a spreadsheet you update every week without thinking about it.
Why operators resist this
Cutting your analytics stack feels like flying blind. You’ll worry you’re missing something. You’re not. You’re missing noise.
The operators who grow fastest are the ones who know their three numbers cold, can recite them in a conversation, and make every strategic decision by asking: “Will this move one of the three?”
If the answer is no, they don’t do it. If the answer is yes, they do it this week.
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