Email reports drown you in numbers. Opens, clicks, bounces, conversions — every send produces a dashboard, and it’s easy to fixate on the vanity figures while missing the ones that predict revenue. The trick isn’t tracking more; it’s knowing which metrics tell you something you can act on.
Here are the ones that matter, grouped by what they actually tell you: engagement, list health, and business impact.
Engagement: is the content landing?
- Open rate — the share of recipients who opened. A read on whether your subject lines and sender reputation are working. Recent medians sit around 43%, but treat this number with suspicion: Apple’s Mail Privacy Protection auto-marks emails as opened, inflating the figure for many lists.
- Click-through rate (CTR) — the share of recipients who clicked a link. Because it’s unaffected by Apple MPP, it’s a far more honest engagement signal than open rate. Median is roughly 2%.
- Click-to-open rate (CTOR) — of the people who opened, how many clicked.
This isolates content quality from deliverability. Formula:
(unique clicks ÷ unique opens) × 100. Median around 7%.
If you only watch one of these, make it CTR or CTOR — they survive the privacy-driven distortions that have made raw open rate increasingly unreliable.
List health: are you protecting the asset?
Your list is the asset. These metrics tell you whether it’s getting healthier or quietly rotting:
- Bounce rate — the share that never arrived. Hard bounces (permanently invalid) hurt sender reputation directly; soft bounces (temporary) are worth watching but less damaging. Keep this low or deliverability suffers across the board.
- Spam complaint rate — how many people marked you as spam. Even small numbers here are a loud signal about list quality, consent, or frequency.
- Unsubscribe rate — the share opting out. Rising unsubs point to a segmentation, relevance, or frequency problem. Median is about 0.22%, and it climbs sharply with cadence — frequent senders see more.
- Active subscriber count — your list minus bounces, complaints, unsubscribes, and deletions. The real size of your reachable audience, and the number to grow.
Business impact: does it make money?
Engagement is a means; revenue is the end. These close the loop:
- Email conversion rate — the share who bought after clicking. Averages around 0.32% (roughly 3 purchases per 1,000 recipients), and automated emails tend to beat broadcasts. One useful tactic: emails with 2–5 links convert at about double the average.
- Email revenue and orders — the total money and purchase count attributed to email. The figures that justify the channel to your leadership.
- Average order value (AOV) — mean order size from email. Reveals spending behavior that raw conversion rate hides.
Quick-reference benchmarks
| Metric | Typical median | Reliable signal? |
|---|---|---|
| Open rate | ~43% | Distorted by Apple MPP |
| Click-through rate | ~2% | Yes — MPP-proof |
| Click-to-open rate | ~7% | Yes — content quality |
| Unsubscribe rate | ~0.22% | Yes — relevance/frequency |
| Email conversion rate | ~0.32% | Yes — revenue impact |
Benchmarks vary widely by industry, so use them as a rough orientation, not a target. Your own trend line over time is more useful than anyone else’s median.
How to actually improve them
Resist the urge to overhaul everything at once. A simple loop works better:
- Establish a baseline. Know your current numbers before you change anything.
- Define the audience. Most metric problems are really targeting problems — clarify who each message is for.
- Test incrementally. Change one variable at a time, measure, keep what wins. Continuous iteration beats wholesale rewrites.
The takeaway
Don’t drown in the dashboard. Watch CTR and CTOR for engagement you can trust, guard bounce, complaint, and unsubscribe rates to protect your list, and tie it all back to conversion and revenue so email stays accountable to the business. The right handful of metrics, tracked over time, will tell you everything the full report buries.