Why a single number can mislead you
A campaign that gets a 22% open rate can be a huge win for one list and a disappointment for another. Without context, raw numbers like opens and clicks don't tell you much. The fix isn't to chase one universal target — it's to understand the handful of ratios marketers actually compare campaigns against, and how much those ratios legitimately vary.
The three numbers that matter
Open rate
Open Rate = Opens ÷ Emails Sent. This is the most-watched metric, but it's also the least reliable one in recent years. Apple Mail Privacy Protection and similar features can pre-fetch images and inflate opens automatically, meaning open rate increasingly measures deliverability and inbox placement as much as genuine curiosity.
Click-through rate (of sent)
CTR = Clicks ÷ Emails Sent. This measures how many of everyone you emailed actually clicked something — a blend of subject line performance, inbox placement, and body content relevance. It tends to be a more trustworthy signal than open rate alone because a click is a much harder action to fake or auto-trigger.
Click-to-open rate
CTOR = Clicks ÷ Opens. This isolates content performance from subject-line/deliverability performance: of the people who actually opened the email, how many found something worth clicking? A low CTOR next to a healthy open rate often means the subject line is doing its job but the body content or call-to-action isn't landing.
Commonly-cited general ranges
Across many industry reports, general averages tend to cluster roughly around: open rate in the 15%-25% range, click-through rate in the 1%-3% range, and click-to-open rate in the 10%-20% range. These numbers are useful as a rough gut-check, not a target to hit exactly.
Why 'general' really means general
B2B software newsletters, e-commerce promotional blasts, and transactional receipts behave completely differently. A tightly-segmented list of 500 engaged subscribers will often outperform a purchased list of 50,000 by a wide margin on every metric. Sending frequency matters too — a monthly newsletter to an opted-in list often beats a daily promotional blast on open rate, even from the same sender.
How to actually use benchmarks
The most useful comparison isn't your numbers against an external benchmark — it's your numbers against your own historical average for a similar email type. Use general industry ranges as a sanity check (are you wildly off from what's typical?) and use your own trendline as the real signal for whether a specific change — a new subject line style, a different send time, a redesigned template — actually moved the needle.
Reading a specific dip correctly
If click-to-open rate drops sharply while open rate holds steady, the subject line is probably fine and the problem is likely inside the email — a weak call-to-action, too much text before the link, or content that didn't match what the subject line promised. If open rate itself drops, look at deliverability (spam folder placement) and subject line fatigue before touching the body content.
The takeaway
Benchmarks are a starting compass, not a finish line. Plot your numbers against general reference ranges to catch obvious red flags, but build your real optimization loop around comparing each campaign to your own list's history.
Frequently Asked Questions
Yes — the Email Engagement Benchmark Calculator takes your sent, opens, and clicks and compares your open rate, click-through rate, and click-to-open rate against commonly-cited general benchmark ranges. It's a one-time $4.99 purchase — no subscription, no account required.
Click-through rate (CTR) is clicks divided by total emails sent — it reflects overall campaign performance. Click-to-open rate (CTOR) is clicks divided by opens only — it isolates how compelling your email content was to people who actually opened it, separate from subject-line or deliverability effects.
No. The ranges used are general, commonly-cited averages aggregated across many industries and list types, presented as a rough reference point. Actual typical performance varies a lot by industry, list quality, and email type — treat the comparison as directional, not exact.
No. You manually enter the three numbers — sent, opens, clicks — from any email platform's reporting dashboard. Nothing connects to your email service, and no data leaves your device.
Both. Enter the numbers for any single send — a one-off campaign, a recurring newsletter issue, or an automated sequence email — to get a benchmark read for that specific send.