Open Rates in Email Marketing: What Really Matters Now

The open rate in email marketing is no longer a reliable success metric. Privacy features can register opens even though a recipient has never read the email. At the same time, security systems can automatically check clicks.

This fundamentally changes how success is measured.

What matters today is no longer how many supposed opens your email tool shows. What's more important is what actually happens after the email is sent.

Does a prospective customer click on a relevant service page? Do they respond? Does it result in an inquiry, a purchase, or measurable revenue?

The open rate will therefore not disappear from reporting. It will simply take on a new role: from a success indicator to a diagnostic metric.

Why has the open rate in email marketing become unreliable?

Classic Open Tracking is usually based on an invisible tracking pixel.

When this is loaded, the system detects that it has been opened.

In the past, the rule was, simply put:

Pixel loaded → Email likely opened.

Today, this mapping no longer works reliably.

Apple Mail Privacy Protection can load embedded content in the background. This means that the tracking pixel can be loaded even if the recipient hasn't actually read the message.

Conversely, a real opening may go unnoticed if external images are blocked.

The open rate therefore no longer measures human attention exclusively. It also partly reflects email client and system behavior.

Here's how tracking can differ

The most important finding is:

→ Today, the open rate sometimes measures technical processes rather than actual interest.

Does that mean the open rate is completely worthless?

No.

The open rate can still serve as a general diagnostic and trend metric.

For example, you can use it to identify unusual changes or compare similar campaigns within the same measurement environment.

However, it should no longer be the primary business KPI.

A campaign with an open rate of 55 percent is not automatically successful.

More important are questions such as:

• How many qualified clicks were generated?
• How many recipients responded?
• How many leads or purchases were generated?
• How much pipeline or revenue was affected?

This shifts modern email marketing from attention metrics to business metrics.

Which email marketing KPIs really matter today?

There is no single metric that replaces the open rate.

A clear KPI hierarchy is more useful.

The following applies:

→ The closer a metric is to an actual business action, the more it should influence your decisions.

The New KPI Hierarchy

The principle is:

→ Move the open rate down in your reporting. Move business outcomes up.

Why is the click-through rate better, but not perfect?

The click-through rate (CTR) shows the percentage of recipients who clicked on a link.

A click is significantly more meaningful than a technically registered open.

However, there is a problem here as well: bot clicks.

Security systems can automatically scan links to detect phishing, malware, or dangerous URLs.

This can result in click data without a person having actually shown any interest.

Therefore, the following applies:

Open rate → highly prone to distortion

unfiltered CTR → better

bot-filtered CTR → more reliable

Conversion → more commercially relevant

Revenue or pipeline → crucial

This distinction is particularly important in B2B. Otherwise, an apparent click on pricing or a case study could influence lead scoring or sales alerts, for example.

Why is the CTOR also losing importance?

The Click-to-Open Rate (CTOR) is calculated as follows:

Unique Clickers ÷ Unique Opens

If the number of measured openings is artificially inflated, the CTOR is automatically distorted as well.

Example:

400 clicks and 80 click-throughs result in 20 percent CTOR.

If 800 openings are subsequently measured, but 80 clickers remain, the CTOR drops to 10 percent.

Actual user behavior has not changed.

For this reason, the CTOR should also be viewed primarily as a diagnostic value.

Which key metrics are particularly important in B2B?

In B2B, an email rarely leads directly to a purchase.

Therefore, the entire chain of effects is crucial:

Email → Interaction → Lead → Opportunity → Pipeline → Revenue

Particularly valuable signals include:

• Qualified responses,
• Human clicks,
• Pricing visits,
• Calls for case studies,
• Contact– or demo requests,
• Opportunities,
• Pipeline,
• Revenue.

A reply rate can therefore be significantly more meaningful than a high open rate.

What is a Qualified Click Rate?

A useful internal metric is the Qualified Click Rate.

It is not an official industry standard.

First, you define which click destinations indicate genuine business interest.

These may include:

• Product or service pages,
• Pricing,
• Case studies,
• Demo,
• Contact,
• Offer.

A commonly used formula is:

Recipients with at least one qualified human click ÷ emails delivered × 100

This is closer to the actual intent than a traditional CTR.

Which metrics are particularly important in B2C?

In B2C and e-commerce, email can often be measured more closely in relation to revenue.

Die typische Journey lautet:

Email → Product → Shopping Cart → Checkout → Purchase

Key metrics include:

• bot-filtered CTR,
• Conversion Rate,
• Add to Cart,
• Orders,
• Revenue,
• Repurchases,
• Revenue per Recipient.

Why is revenue per recipient interesting?

Revenue per Recipient shows how much revenue a campaign generates per recipient.

One possible calculation is:

Attributed email revenue ÷ recipient base

Example:

50,000 recipients generate 12,500 euros in revenue.

That amounts to 0.25 euros in revenue per recipient.

This metric answers a question that is significantly more relevant to business performance than the open rate.

→ A lead has no direct economic value. A conversion does.

Why Are Active Subscribers Becoming More Important?

A large list is not automatically a good list.

100,000 contacts aren't worth much if only a small fraction of them actually respond.

You should therefore focus more closely on your active target audience.

Examples of relevant activities include:

• human click,
• Answer,
• Form,
• Purchase,
• Demo request,
• Website conversion.

A simple open should not be sufficient for this.

What is the Engaged Audience Rate?

The Engaged Audience Rate can be used as an internal metric.

Formula:

Active contacts during the analysis period ÷ sendable contacts × 100

There is no universal timeframe here either.

For frequent B2C campaigns, 30 to 60 days may be appropriate. In B2B, however, 90 to 180 days or more may be a better fit.

It's crucial that your analysis window aligns with your mailing frequency and purchase cycle.

Which Open-based automations should you review?

It's not just Reports that can use false signals.

Automations should also be reviewed.

The following are particularly critical:

• If open → next action,”
• “Not opened → Resend,”
• Lead scoring based on opens,
• Segmentation based on the last open,
• Reactivation after Opens,
• A/B tests based exclusively on the open rate.

A better approach is:

Intent before technical interaction.

This means:

An opening is given little or no weight.

Pricing page visits, replies, forms, demos, or purchases become significantly more important.

Why should spam rates and deliverability be given greater emphasis in reporting?

List Health is about more than just commitment.

You should also keep an eye on:

• Spam Complaint Rate,
• Hard bounce rate,
• Unsubscribe Rate,
• Sender Reputation,
• Deliverability.

Google recommends keeping the spam rate reported in Postmaster Tools below 0.1 percent. You should avoid rates of 0.3 percent or higher.

A high open rate is of little value if your reputation is suffering at the same time.

What should modern email reporting look like?

The email tool should not be your only data source.

The old model was:

Shipping → Open → Click

The better model is:

Shipping → Human Interaction → Qualified Intent → Conversion → CRM or Online Store → Revenue

To do this, you should connect multiple systems:

• Email Service Provider,
• UTM parameters,
• Web Analytics,
• Conversion tracking,
• CRM,
• Shopsystem.

This way, you can measure more than just behavior within the email.

You can see how email marketing actually contributes to business results.

What should become more important in the future?

How will the opening rate continue to develop?

The open rate is unlikely to disappear.

It simply loses its former significance.

First-party data such as purchases, replies, forms, CRM status, and website conversions are becoming more important.

In the future, artificial intelligence can also consolidate and analyze these signals more effectively.

But one principle remains:

→ Better models start with better signals, not with more data.

A technically generated open signal does not automatically become genuine interest, even when analyzed by AI.

Frequently Asked Questions about Open Rates in Email Marketing

Is the open rate still important?

Yes, but mainly as a diagnostic and trend metric. For business success, conversions, leads, and revenue are more meaningful.

Which KPI replaces the open rate?

There is no single replacement. Use filtered clicks, qualified intent, conversions, and business outcomes together.

Is CTR still a reliable metric?

The CTR is more reliable than the open rate. However, bot clicks can distort it. Filtered click data is therefore preferable.

Which KPIs are particularly important in B2B?

Replies, qualified clicks, leads, opportunities, pipeline, and revenue.

Which KPIs are particularly important in B2C?

Conversion rate, orders, revenue, revenue per recipient, and repeat purchases.

Conclusion: The open rate isn't going away — but its significance is

The death of the open rate in email marketing does not mean that email is becoming harder to measure.

Rather, companies must stop equating technical signals with genuine interest.

The open rate remains a diagnostic metric. You should also view unfiltered clicks critically.

In B2B, the most important metrics are:

Replies, qualified clicks, leads, pipeline, and revenue.

In B2C, the focus is more strongly on:

Clicks, conversions, orders, revenue per recipient, and repeat purchases.

The actual paradigm shift is therefore:

→ Don't focus on whether a system records an email as opened. Focus on what your recipient actually does afterward.

If you want to align your campaigns, automations, and reporting with this measurement logic, we support you with email marketing from strategy through to performance analysis.