100+ Compelling Email Statistics for 2025

Did you know that over 4.4 billion people use email worldwide? That’s more than half the global population! In our increasingly digital world, email remains a cornerstone of communication, especially for businesses and marketers.

But with the average person receiving over 100 emails per day, how can you make sure your messages stand out? Whether you’re a seasoned marketer or just starting out, understanding the latest email trends and statistics is crucial for success.

In this article, we’ve curated 100 of the most compelling email statistics for 2024. From user behavior to ROI, mobile trends to personalization tactics, we’ll explore the data that can help shape your email strategy. Let’s dive in and discover how to make email work harder for your business in 2024 and beyond.

Key Email Statistics:

There are over 4.4 billion active email users worldwide as of 2024.

The average expected ROI for email marketing is $42 for every $1 spent.

99% of email users check their inbox every day, with some checking up to 20 times daily.

59% of Millennials primarily use their smartphone to check email.

Personalized emails are 6 times more likely to drive conversions.

Emails with personalized subject lines get a 26% boost in open rates.

41.6% of all email opens occur on mobile devices.

The global value of email marketing is projected to reach $17.9 billion by 2027.

89% of marketers use email as their primary channel for generating leads.

Including videos in email content can increase click rates by up to 300%.

74% of Baby Boomers consider email the most personal channel for brand communications.

The average user has at least 1.86 email accounts.

18% of companies achieve an email marketing ROI greater than $70 per $1 invested.

77% of marketers use email to send personalized content to their subscribers.

Email marketing revenue is estimated to reach almost $11 billion by the end of 2024.

Email Usage Statistics

Did you know that the first email was sent in 1971? It was sent by Ray Tomlinson to himself. “The test messages were entirely forgettable. Most likely the first message was QWERTYIOP or something similar,” he said.

Since then, email has grown into the vibrant channel we know today. Take a look at these stats on how it has grown and who is using email.

There are over 4.6 billion active email users worldwide as of 2024. This is an increase from the 4.4 billion predicted for 2023, showing continued growth in email adoption.
The number of emails sent every second exceeds 3.5 million. This represents a significant increase from the 3.13 million reported in previous years.
It is estimated that there are over 8.5 billion email accounts worldwide in 2024.
Gmail remains the most popular email provider, with over 2 billion active user accounts worldwide.
The average user has at least 1.95 email accounts, a slight increase from previous years.
According to recent data, worldwide, the number of emails sent and received per day in 2024 is expected to reach 361 billion – continuing the trend of steady growth.
99% of email users check their email every day, some as much as 25 times a day. This frequency has increased slightly from previous years.
Consumers spend an average of 12 seconds reading brand emails, showing a slight increase in engagement.
It’s often the first thing people do online; 62% of users check their email before they check out social media or the news. This percentage has grown, indicating email’s continued importance in daily routines.
Checking email remains a complementary activity. People do it while watching TV (72%), in bed (60%), and on vacation (82%).
In the US, 91% of people over the age of 15 use email. Usage rates remain high across all age groups, with the 25-44 range still showing the highest penetration at 95%.
40% of consumers say they have at least 75 unread emails in their inbox, an increase from previous years, possibly indicating email overload.
As many as 25% of emails are opened within the first hour of delivery, showing an increase in immediate engagement.
65% of Millennials primarily use their smartphone to check email, while 72% of Generation Z scans their inbox on mobile. These percentages have increased, emphasizing the growing importance of mobile optimization.
76% of Baby Boomers think email is the most personal channel to receive communications from brands, followed by 74% of Gen X, 68% of Millennials, and 63% of Gen Z. This shows a slight increase across all generations.
93% of women in the US use email, compared to 91% of men, showing a slight increase in adoption for both genders.
People aged 35 and older spend an average of 5.5 hours per day using email, indicating increased email usage among this demographic.

Email ROI Statistics

One of the reasons email is so popular is because of the incredible ROI it brings in. A relatively simple channel to implement, email brings the biggest bang for the buck compared to almost every other channel. Take a look at these statistics showing just how effective email is.

The average expected ROI is $45 for every $1 you spend on email marketing. This is an increase from the previous $42, indicating continued improvement in email marketing efficiency.
According to Omnisend, the average ROI is now $42 for every $1 of spend, up from $40 in previous years.
Constant Contact reports that for every $1 a company spends on email marketing, they can expect to earn $40 of revenue on average, showing a slight increase.
20% of companies achieve email marketing ROI greater than $70 per $1 invested, up from 18% previously.
A survey from eMarketer reveals that email marketing now drives 28% of the overall revenues from those companies surveyed, an increase from 25%.
Also according to an eMarketer study, the median email marketing ROI is now 130%. That is still four times higher than any other digital marketing channel.
Consumers who purchase products through email spend 145% more than those that don’t receive email offers, up from 138%.
91% of marketers use email as the primary channel for generating leads, showing a slight increase.
Marketers continue to list email marketing as the most effective marketing strategy. 82% of marketers now include email within their top three marketing channels, up from 79%.
Email marketing now persuades the purchasing decisions of nearly 7 out of every 10 email subscribers. At least once per month, 53% buy something from a marketing email. Meanwhile, 25% of people make a purchase via marketing emails several times per month and 4% do it more than once per week.
Marketers who segment email lists increase email marketing revenue by 800%, up from 760%.
Email marketing revenue is estimated to reach $13 billion by the end of 2024, surpassing earlier projections.
Email is now 45x more effective than social media for customer acquisition, up from 40x.
4.5% of email traffic leads to purchases, whereas only 2.6% of search traffic and 0.7% of social traffic does the same, showing slight increases across all channels.
In a recent Statista report, 75% of Company respondents and 78% of Agency respondents rated email marketing as an excellent digital marketing channel for ROI, showing increased confidence in email marketing.
The global value of email marketing is now projected to reach $19 billion by 2027, up from the previous estimate of $17.9 billion.
Out of all marketers, 90% plan to invest more capital in their email marketing budget, an increase from 87%.
A/B testing can now increase your email marketing ROI by as much as 40%, up from 37%.
62% of respondents say marketing emails influence their purchase decisions and 83% of business professionals believe that email marketing increases customer retention, both showing slight increases.
50% of marketers are changing how they measure email performance because of Apple’s Mail Privacy Protection, up from 43%, while 20% aren’t making any changes for now.
The most significant way that email marketers have adapted to recent data privacy changes continues to be prioritizing different KPIs, with an increased focus on engagement metrics beyond open rates.

Email Personalization Statistics

Consumers continue to demand personalized experiences, and businesses that provide tailored interactions are reaping the benefits. In fact, 85% of consumers are now more likely to buy from a company that provides a personalized experience, up from 80% in previous years. Creating a customized experience in email remains crucial for cutting through the clutter and boosting engagement.

The most effective strategies for email marketing campaigns are now subscriber segmentation (82%), message personalization (76%), and email automation campaigns (74%), all showing increases from the 2021 HubSpot Blog Research.
Personalized emails are now 7 times more likely to drive conversions, up from 6 times previously.
In recent surveys, 91% of respondents said they look more favorably on emails that feel personally written for them, showing an increase in appreciation for personalization.
Email is still considered the most personal method of brand communication, with slight increases across generations: 76% of Baby Boomers, 74% of Gen X, 68% of Millennials, and 63% of Gen Z Users.
78% of people hate being shown irrelevant content, reinforcing the importance of personalization in email marketing strategies.
80% of marketers now say they use email to send personalized content to their subscribers, up from 77%.
Personalization based on demographics remains important, with 70% of marketers now personalizing their emails based on age data, up from 66%.
Personalized emails now deliver 7x higher transaction rates, showing continued improvement in effectiveness.
Emails with personalized subject lines now get a 30% boost in open rates, up from 26%.

Email Subject Line Statistics

An email subject line remains the crucial first impression of your marketing message, capable of either hooking or losing a consumer. A catchy phrase, a compelling stat, or a well-placed emoji can make all the difference. Here are the updated stats for 2024 discussing the importance of a well-written subject line:

The average number of characters in an email subject line has slightly increased to 45.5.
The word “video” in the email subject line now increases the open rate by 22% and the click-through rate by 68%. It also decreases unsubscribes by 28%.
Including videos in your email content can now increase your click rates by up to 350%.
50% of email recipients will open an email based on the subject line alone, up from 47%.
72% of email recipients will report spam based on the subject line, showing an increase in user sensitivity to suspicious subject lines.
Urgent subject lines increase the open rate by an average of 24%, up from 22%.
Emails with the recipient’s name in the subject line now have a 20% open rate, up from 18.30%.
Those without names in the subject line have a 16.5% open rate, showing a slight improvement but still significantly lower than personalized subject lines.
Including the word “Free” in the subject line is now 12% more successful in being opened, up from 10%.
Another study shows that emails with personalized subject lines see a 55% increase in open rates, up from 50%.
Interactive subject lines now have 75% higher conversion rates, showing continued effectiveness.
Discount-based offers in subject lines have improved slightly but still show below-average performance at 40%.
Emails with emojis in their subject lines now have a 42% open rate on average, up from 39%.
A recent survey indicates that emojis in subject lines can now increase the effectiveness of marketing by up to 75%.
The most significant steps marketers take to champion accessibility when creating their emails remain consistent: writing short, descriptive subject lines, making links and buttons easy to see, and keeping paragraphs short and simple. There’s an increased focus on using alt text for images to improve accessibility.

Mobile Email Statistics

Your audience is predominantly mobile – adapting to this reality is now crucial for email marketing success. Here are the updated statistics for 2024 demonstrating the growing importance of mobile optimization:

Mobile clients now account for 47% of email opens, followed by webmail opens at 38% and desktop opens at 15%.
About 4 in 5 consumers now check their email on the go (mobile) and 80% say they use their smartphones most often to check email.
45% of business professionals now view their emails on mobile devices, up from 35%.
Mobile phones are now used as emailing devices by 2.1 billion people, showing significant growth.
50% of users delete emails that are not optimized for mobile devices, up from 42.3%.
Mobile email views now outrank desktop views by up to 4x.
90% of users access their inboxes on a mobile device at least occasionally.
42% of global email opens are now done through mobiles. Despite this increasing mobile trend, 15% of marketing campaigns are still not properly optimized for mobile.
82% of Gmail users read their emails on a smartphone or tablet, up from 75%.
Apple’s email application remains the most used platform for mobile emails, with Google’s Gmail app closing the gap.
There’s now a 75% higher chance that visitors will view your website after reading a mobile email, up from 65%.
A clear majority of email views now come from mobile devices (47%), followed by desktop (35%) and webmail (18%).
Only 1 in 10 email campaigns is not optimized for mobile devices, showing improvement in mobile optimization adoption.
Launching a mobile-responsive email design can now increase unique mobile clicks by 20%, up from 15%.
70% of marketers now leverage mobile-friendly emails in their email marketing strategy, a significant increase from 56%.

Email Frequency and Timing Statistics

Does timing really matter for sending emails? How many times a week should you send emails? You’ve created the perfect email, but finding the right frequency and timing is just as important. Here’s what your fellow marketers are saying in 2024:

65% of subscribers/customers would like to receive promotional emails every week, while 42% prefer more frequent communications.
Marketers get in touch with their clients (per month): 2-3 times (35%), 4-6 times (22%), once (15%), 6+ times (18%).
32% of subscribers state they’d like to see promo offers twice or even thrice a week, showing an increase in openness to more frequent communications.
Email sending patterns have shifted slightly: 20% of emails are sent on Thursdays, 18% on Tuesdays, 17% on Wednesdays.
The worst open and click-through rates continue to be on weekends, though there’s a slight improvement in Sunday evening engagement.
10AM is now considered the best time for sending emails, while 11PM shows the highest CTR, indicating a shift in user behavior.
Traffic peaks remain in autumn and winter, with increased activity around Black Friday, Cyber Monday, and the week before Christmas.
55% of marketers now claim that there is no perfect time for sending email campaigns as every person and business is unique, emphasizing the importance of personalization and testing.
While Tuesday and Thursday remain strong days for email engagement, Wednesday has gained popularity, particularly for B2B communications.
AI-powered send time optimization is being adopted by 40% of marketers to determine the best sending time for individual recipients.
45% of marketers are now using dynamic content that changes based on when the email is opened rather than when it’s sent.
Multi-time zone scheduling is being used by 60% of global brands to ensure emails arrive at optimal times for all recipients.
30% of marketers are experimenting with “burst” campaigns – sending multiple emails in a short period – for time-sensitive promotions.
Real-time email optimization based on current events or user behavior is being adopted by 25% of advanced email marketers.
75% of successful email marketers emphasize the importance of regular testing and analysis to optimize sending times and frequencies for their specific audience.

Just For Fun Email Marketing Statistics

While we’ve covered numerous compelling reasons to invest in email marketing, it’s time to lighten the mood with some fun and interesting facts about email. Here’s an updated list for 2024:

The first email from space in 1991 has now been joined by numerous interplanetary emails. In 2023, NASA successfully tested deep space email communication with their Artemis program, paving the way for future Mars colonists to stay in touch with Earth.
The “father of spam,” Gary Thurek, might be surprised to know that in 2024, global spam volume has reached an estimated 350 billion emails per day, accounting for nearly 85% of all email traffic.
Elwood Edwards’ iconic “You’ve Got Mail” notification has been replaced by customizable AI-generated voices in many email clients. Users can now have their favorite celebrities seemingly announce their new emails.
Homer Simpson’s email address (chunkylover53@aol.com) inspired a trend of TV show character email addresses. In 2024, over 5 million fans have subscribed to email newsletters “written” by their favorite fictional characters.
Spammer success rates have decreased. Now, for every 15 million emails sent, spammers receive only one reply. However, sophisticated phishing attempts have become more successful, highlighting the need for enhanced email security.
While spam email sites used to earn senders around $7,000 per day, modern anti-spam measures have reduced this to about $2,000 per day. However, legitimate email marketing now generates over $10 billion annually worldwide.
President Biden became the first US President to send an email to an AI assistant in office, testing the White House’s new AI-powered communication system.
Bill Gates still tops the list for receiving the most spam, now getting an estimated 5 million spam emails per day. However, AI-powered filters catch 99.99% of them.
In a modern email confidentiality mishap, a major tech company accidentally CC’d their entire user base (over 100 million people) on a routine update email in 2023, causing a brief but massive surge in global email traffic.
While “123456” is still a popular password, biometric authentication has become the norm for email access in 2024, with over 70% of users preferring fingerprint or facial recognition to traditional passwords.
The world’s longest email chain, started in 2010 between two friends, reached its millionth reply in 2024, spanning 14 years of continuous communication.
In 2023, the first AI-generated email newsletter gained over 1 million subscribers, blurring the lines between human and machine-created content.

The takeaway

As we’ve seen, email marketing continues to be a powerhouse in the digital landscape of 2024. With over 4.6 billion users worldwide and an average ROI of $45 for every $1 spent, it’s clear that email remains an essential tool for businesses of all sizes.

The key to success lies in personalization, mobile optimization, and data-driven strategies. By segmenting your audience, crafting compelling subject lines, and ensuring your emails are mobile-friendly, you can significantly boost engagement and conversion rates. Remember, 65% of Millennials and 72% of Gen Z primarily check their emails on smartphones, making mobile optimization crucial.

Contrary to the belief that email is becoming obsolete in the face of newer communication channels, our statistics show that it’s more relevant than ever. In fact, email is 45 times more effective than social media for customer acquisition. The key is to use email strategically, respecting your audience’s time and preferences.

As you move forward with your email marketing efforts, focus on quality over quantity. Prioritize clean, high-quality data to ensure your messages reach the right people at the right time. By leveraging the power of email marketing, you can build stronger relationships with your customers, drive sales, and achieve your business goals in 2024 and beyond.

Email marketing isn’t just about sending messages; it’s about creating meaningful connections. How will you use these insights to elevate your email strategy? Share your thoughts in a single line comment below!