Email open rate statistics: Key insights to optimize your business email campaigns

Email marketing is the staple of contemporary internet-driven organizations, and it has completely ousted direct mail tactics. Using email campaigns as a primary customer acquisition channel and a go-to tool for promoting their services or products, business professionals pay maximum attention to sending out cordial welcome emails, leveraging email marketing automation, reinventing email design, crafting email subject lines, and carefully planning and implementing other components of a comprehensive email marketing strategy. 

One of the vital email marketing benchmarks that enables specialists to assess the effectiveness of email marketing performance is the open rate for the company’s promotional emails. This article offers glimpses of email marketing statistics, tracing this crucial index across several categories.

Top 10 key email open rate statistics you need to know

We will start by showcasing general email marketing stats on open rates:

1. To calculate this email metric, divide the number of unique opens by the number of delivered emails, then multiply the result by 100%.
2. According to Campaign Monitor, the average email open rate is 21.5%.
3. If your organization’s open rate drops below 15%, this is a telltale sign that you should revise your approaches to key aspects of email marketing campaigns. 
4. To increase the average open rate, almost half of enterprises spend between 21 and 45 days on warming-up efforts.
   
   

   
   (Source: Mailmodo)

5. Geographically, the highest average email open rate is observed in Australia (47.69%) and Europe (45.08%), whereas the lowest is manifested in Asia (32.54%) and Latin America (31.97%).
6. Emails sent by political organizations have the lowest open rate (0.83%).
7. Welcome emails have the highest average email open rate (83.63%).
8. Personalized emails have a 26% greater chance of being opened by recipients.
9. As email service providers have begun introducing message preview mechanisms, this index is becoming less straightforward to use. For instance, Apple Mail, which accounts for 46% of email client market share, overstates open rates by 18%. 
10. As marketers report, email marketing has an ROI of $36–$42 per dollar invested, making the open rate a critical early indicator of campaign success and future revenue performance.

What other email marketing metrics are related to the open rate?

Key indicators that impact email open rates

Although being quite distinct indices, these four characteristics of marketing emails influence open rate at the end of the day.

1. Click to open rate (CTOR)

While the open rate focuses on unique opens and assesses mainly the quality of subject lines, the click-to-open rate shows how many clicks the content of the already opened email has earned. The average click-to-open rate across various domains equals 5.3%.

2. Click-through rate (CTR)

The CTR is something between the open rate and the click-to-open rate. It indicates how many unique clicks were identified among all delivered messages. The average click-through rate ranges from 2% to 3%, depending on the vertical. 

3. Conversion rate

The open rate is an indicator of the effectiveness of the hook email marketers use to get consumers to open the email. The conversion rate reflects their success in achieving the ultimate goal: getting a consumer to complete the desired action (buying, subscribing, downloading, participating in a survey, you name it). The average email conversion rate ranges from 1% to 5% for different sectors. 

4. Unsubscribe rate

This fundamental customer retention index denotes the percentage of finance, insurance, real estate, or retail email list subscribers who have opted out. The average unsubscribe rate is around 0.22%, though some fields may show a significant deviation from the median.

(Source: Mailerlite)

How subject lines influence email open rates

An intriguing subject line is essentially the driving force behind a recipient’s decision to open the email. What is the email marketing data regarding this element of messages?

• you can increase the open rate by half if you include a question in the subject line;
• personalized subject lines are even more effective in improving email engagement;
  
  

  
  (Source: Insider One)

• a compelling subject line is a surefire recipe for making 43% of people open a message;
• incorporating an emoji into the subject line increases open rates by 56%.

Time of day: When to send emails for the best open rates

When should you unleash your emails to hit the bull’s-eye?

• sending email between 10 a.m. and 2 p.m., from Tuesday to Thursday, is a rule of thumb for a good open rate;
• emails are slightly more often opened on Saturdays;
  
  

  
  (Source: Forbes)

• for B2C customers, Friday afternoons and Saturdays are the best times to send emails;
• avoid sending emails to B2B clients on Mondays and Fridays. The former weekdays are typically filled with attempts to catch up on tasks, whereas the latter are usually spent wrapping up the week with little attention paid to emails.

How email frequency impacts open rates

This is another mission-critical factor that determines whether recipients will welcome your emails.

• sending emails daily is practiced by 21% of marketers, whereas 22% of them send two or three business emails per day;
• receiving from one to three marketing emails weekly is the optimal frequency for most customers; 
• the more frequently you bombard clients with messages, the lower the odds are that they will open them; 
  
  

  
  (Source: LinkedIn)

• together with recency and monetary value, email frequency is a constituent of RFM segmentation that helps companies determine customer engagement and loyalty.

Mobile vs. desktop open rates: What the data says

Today, mobile devices reign supreme in many business spheres. How do preferences for them impact the open rate for email marketing initiatives?

• email users worldwide open their inboxes on mobile devices 1.7 times more often than on desktops;
  
  

  
  (Source: Zero Bounce)

• currently, Apple Mail is the most popular mobile client (46.56% of the market share). Another popular mobile client in the email domain is Gmail (25.45%). All their competitors are under 5%; 
• if the email isn’t optimized for mobile, 62% of people ignore or even delete it;
• despite the dominance of mobile devices, major email KPIs are better for desktops. Both the click-to-open rate and the engagement rate are 21% on desktop vs. 11% on mobile, and desktop click rates are 40% higher on average. 

Email open rates by industry: What you need to know

All email marketing stats differ significantly when we consider the multiple verticals in which this marketing tool is leveraged.

• the non-profit and hospitality realms demonstrate the highest open rates;
  
  

  
  (Source: HubSpot)

• the average open rate across all industries is 42.35%;
• for the B2B sector, the average open rate is generally lower, not exceeding 40%;
• shipping confirmation is the transactional email with the highest average open rate (62.47%), no matter the industry.

The impact of A/B testing on email open rates

In A/B testing, you select a small portion of your email list, split it into two groups, and send a different version of the email to each group. 

Does it work with open rate improvement?

• subject line testing is practiced by 47% of organizations;
• when subject lines are submitted to A/B testing, it can boost open rates by almost a half (49%);
• in addition to the open rate, other email metrics validated through A/B testing include the click-through rate and unsubscribe rate; 
• A/B testing can enhance email marketing ROI by 83%.

Email design and content impact on open rates

A well-thought-out content marketing strategy and workmanlike message design can make the difference in open rate statistics.

• when you include dynamic content in your emails, they can generate 258% more ROI;
• on average, personalized emails have higher open rates;
  
  

  
  (Source: Belkins)

• more than three-fourths of marketers believe that authentic content performs better overall than refined or curated materials.

Trends in email open rates: What to expect in the future

To excel in email marketing and achieve high open rates, you should stay abreast of the current trends in this niche that shape its contours today and will continue to do so down the line. 

The demise of the batch-and-blast approach

Even if you rely on automated emails, sending the same message to the entire database doesn’t work anymore. It maximizes the reach but results in high unsubscribe rates, low open rates, and ridiculous customer engagement. Ultimately, granular clientele segmentation, triggered emails, and personalized content are much more efficient.

The spread of AI

AI-powered mechanisms and ML algorithms are quickly becoming indispensable technologies in various aspects of email marketing, including smart audience segmentation, subject line generation, optimal send time selection, content personalization, continuous A/B testing, and more. As surveys show, 72% of marketers report higher performance of content pieces (emails, blog posts, infographics, etc.) if their creation was AI-assisted. 

The advent of contextualized metrics

The image preloading feature introduced by state-of-the-art email privacy protection mechanisms is misclassified as fake opens, distorting open rate statistics on a large scale. To be aware of real engagement and performance indicators, modern companies place greater emphasis on click-to-open rates and click-through rates, which provide a more objective picture.

Wrapping up

The data you learn about in this article proves that email open rate remains one of the important metrics enabling businesses to understand how effective their email campaign efforts are. You can boost these figures manifold by utilizing high-quality email marketing software. Stripo provides such tools aplenty. Join us to enjoy user-friendly solutions for creating compelling messages that will revolutionize your email campaigns and dramatically enhance open rates.