What Is a Good Email Open Rate?

Email Open Rate Benchmarks by Industry

Email open rates vary significantly across industries based on factors like audience expectations, email frequency, and content type. Here are current industry benchmarks:

• Government: 25-30%
• Nonprofit: 25-28%
• Education: 23-28%
• Healthcare: 20-25%
• Finance and Insurance: 20-24%
• B2B Services: 18-23%
• Media and Entertainment: 18-22%
• Retail and E-commerce: 15-20%
• Travel and Hospitality: 15-20%
• Marketing and Advertising: 14-18%

These benchmarks represent averages across thousands of senders. Your actual performance depends on list quality, sending frequency, content relevance, and subscriber expectations.

How Email Open Rate Is Calculated

Email open rate is calculated by dividing the number of unique opens by the number of emails delivered, then multiplying by 100:

Open Rate = (Unique Opens / Emails Delivered) x 100

For example, if you send 10,000 emails, 9,800 are delivered (200 bounce), and 2,450 recipients open the email, your open rate is:

(2,450 / 9,800) x 100 = 25%

Most email platforms track opens using a small invisible image (tracking pixel) embedded in the email. When a recipient loads the email with images enabled, the pixel registers an open. This tracking method has limitations that we will discuss below.

Why Open Rates Are Less Reliable Now

Open rate reliability decreased significantly in September 2021 when Apple introduced Mail Privacy Protection (MPP) in iOS 15, iPadOS 15, and macOS Monterey. This feature affects all users who open email in the Apple Mail app, regardless of their email provider.

How Apple Mail Privacy Protection Works

When a user enables MPP (most do by default), Apple pre-loads email content, including tracking pixels, through Apple servers before the user sees the email. This happens whether or not the recipient actually opens or reads the message.

The result is that emails appear "opened" even when:

• The recipient never viewed the email
• The email went to spam or trash
• The recipient deleted the email without reading it

Impact on Open Rate Metrics

Apple Mail accounts for approximately 50-60% of email opens in many B2C databases. This means a significant portion of your "opens" may not represent actual engagement. Many senders saw their open rates increase by 10-20 percentage points after MPP launched, not because engagement improved, but because of artificial inflation.

Factors That Affect Email Open Rates

Subject Line Quality

Subject lines are the primary factor in whether recipients open your email. Effective subject lines are specific, create curiosity or urgency, and clearly communicate value. Avoid all caps, excessive punctuation, and spam trigger words that can hurt both deliverability and open rates.

Sender Name and Reputation

Recipients decide whether to open based on who the email is from. Using a recognizable sender name builds trust. If recipients do not recognize you or associate your name with unwanted email, they will ignore or delete your messages regardless of the subject line.

Send Time and Frequency

Email timing affects open rates, though the "best" time varies by audience. B2B emails often perform better during business hours on weekdays, while B2C emails may see better engagement on evenings and weekends. Over-mailing causes fatigue and declining open rates, while too-infrequent sending makes your brand forgettable.

List Quality and Engagement

Lists with high concentrations of engaged subscribers naturally see higher open rates. Lists that include purchased contacts, old addresses, or subscribers who never engaged will always underperform. Regular list cleaning removes dead weight and improves average engagement.

Inbox Placement

If your emails land in spam or the promotions tab instead of the primary inbox, open rates suffer. Deliverability issues caused by poor authentication, bad sender reputation, or high complaint rates directly reduce the number of recipients who even see your email.

Preview Text

The preview text (preheader) that appears after the subject line in most email clients provides additional context that influences opens. Leaving this blank or letting it default to "View this email in your browser" wastes valuable real estate.

How to Improve Your Email Open Rates

Write Better Subject Lines

Test different subject line approaches through A/B testing. Personalization (using the recipient name or relevant details) can increase opens by 10-20%. Keep subject lines under 50 characters so they display fully on mobile devices. Focus on benefit and specificity rather than cleverness.

Segment Your Audience

Send relevant content to specific audience segments rather than blasting your entire list with the same message. Segmented campaigns consistently outperform general broadcasts because recipients receive content matched to their interests, behavior, or stage in the customer journey.

Clean Your List Regularly

Remove subscribers who have not engaged in 6-12 months after attempting re-engagement. These inactive addresses drag down your overall metrics and can hurt deliverability if they include spam traps or abandoned addresses that hard bounce.

Optimize Send Timing

Analyze your own data to find when your audience is most likely to engage. Most email platforms provide engagement reports by time of day and day of week. Test different send times and let the data guide your schedule rather than following generic best practices.

Maintain Deliverability

Open rates mean nothing if your emails never reach the inbox. Ensure you have proper SPF, DKIM, and DMARC authentication. Monitor your sender reputation through Google Postmaster Tools and Microsoft SNDS. Keep spam complaints below 0.1% and bounce rates under 2%.

Use a Consistent Sender Identity

Do not change your sender name or from address frequently. Consistency helps recipients recognize and trust your emails. If you must use different senders for different purposes, establish clear patterns that subscribers learn to recognize.

Better Metrics to Track Instead of Open Rate

Given the limitations of open rate tracking, we recommend focusing on metrics that measure actual engagement and business outcomes:

Click-Through Rate (CTR)

CTR measures the percentage of delivered emails that received at least one click. This requires active engagement that cannot be faked by privacy features. A good CTR is typically 2-5% depending on industry and email type.

Click-to-Open Rate (CTOR)

CTOR measures clicks as a percentage of opens, showing how compelling your email content is to those who open. This helps isolate content performance from subject line and deliverability factors. Good CTOR ranges from 10-15%.

Conversion Rate

Track how many email recipients complete desired actions like purchases, sign-ups, or downloads. This directly measures email effectiveness at driving business outcomes rather than intermediate engagement metrics.

Revenue Per Email

For e-commerce and revenue-generating campaigns, track total revenue divided by emails sent. This accounts for both reach and conversion effectiveness in a single metric that ties directly to business value.

List Growth Rate

Monitor how quickly your list grows (or shrinks) after accounting for new subscribers, unsubscribes, and bounces. Healthy programs maintain positive net growth while keeping engagement high.

When Open Rates Still Matter

Despite their limitations, open rates remain useful for:

• Subject line testing: Comparing open rates between subject line variants still indicates relative performance, even if absolute numbers are inflated
• Trend analysis: Monitoring open rate trends over time can reveal engagement changes, especially when filtered to exclude Apple Mail users
• Deliverability monitoring: Sudden open rate drops may indicate deliverability problems that need investigation
• B2B campaigns: Business email environments have lower Apple Mail adoption, making open rates more reliable

The key is using open rates as one data point among many rather than your primary success metric.