Number of Email Users Worldwide 2024: Demographics & Predictions

Number of Email Users in the World

It seems unbelievable but email is 50 years old now. The last decade saw a slew of “email is dead” predictions but the opposite is happening—despite the proliferation of online messaging apps, social media, and text messages, the number of email users continues to increase. The COVID-19 pandemic further influenced email use as more marketers used email compared to pre-pandemic levels.

The worldwide figures for email users grew to approximately 4 billion in 2020 (The Radical Group, 2019). An annual growth rate forecast of 3% is expected to increase user numbers to nearly 4.5 billion in 2024. For customers, email is the preferred method of reaching out to brands for customer support concerns. Businesses use emails to engage new customers and nurture leads, particularly in the marketing sphere.

The number of email accounts grows at a much faster rate than email users. One email user may have multiple email accounts; the current average stands at 1.75 email accounts per user (Convince&Convert, 2019). Consumer or personal email is a standard of digital life—used for communication, shopping, logging on to social media and subscription service sites like Netflix, Spotify, Hulu, and gaming sites like Twitch, etc.

This article examines email users’ preference in terms of the following main categories:

Number of Email Users

How many email accounts are there?

The number of email accounts is higher than the number of email users: there are 5.59 billion active email accounts or nearly 1.5 times higher than the number of users (99Firms, 2020). Users with multiple accounts generally categorize theirs into business or customer email addresses, while others would have different accounts for different purposes—shopping, subscriptions, family communications, etc.

How many email addresses do most people have?

Email is the key to all user accounts: social, messaging, shopping, banking and payments, and streaming subscriptions. People have multiple email accounts—sometimes with no clear delineation between work and personal use—with the average number of email user accounts at 1.75 per person.

2019 saw the worldwide figures for email users rise to 3.9 billion monthly active users. The figure represents over half of the world’s 7.7 billion population. This means as much as 1 of every 2 people in the world have and use email. By 2020, the number of email users increased further to 4 billion.

What is the percentage of email users in the UK?

Email is the most common internet activity for UK adults, according to the latest Office of National Statistics study. It was used by 86% of the adult population with no changes when compared to the same study in the previous year (ONS, 2019). When it comes to the age group that utilized email the most (sending and receiving), people ages 35-44 used it the most (82%), followed by people ages 25-34 (79%) (Ofcom, 2020).

Number of email users in the US by age group

Email is universal and is the most common internet-based activity for adults of working age. There are some variations in usage and habits between age groups and gender but the difference is negligible.

In 2019, 93.6% of people ages 25-44 used email, while 90.1% of people ages 45 to 64 used the same. On the other hand, 90% of individuals ages 15-24 access and use email. There is very little difference among US email users with all age groups—Gen-Z, Millennial, and Gen-X having above 90% usage rates. The exception is the Boomer group but their usage rate is still high at 84.1% (US Census Bureau; NTIA, 2020).

What is the percentage of email users in the US by gender?

When it comes to usage by gender, as of 2019, 91.1% of female internet users use email in their online activities and communication, while 89.4% of males do the same (US Census Bureau, 2020). Overall, 90.3% of internet users in the US access and use their emails.

Daily Email Traffic

Email service providers are numerous but the following are the most popular based on their user numbers.

Gmail is the most popular with 1.5 billion active global users (Androidpolice). This is followed by Outlook with 400 million; roughly a quarter of Gmail’s numbers. Yahoo! Mail closes the third spot with nearly 230 million active users.

iCloud has an estimated 850 million users; although not strictly an email service, it works both as cloud storage for documents, photos, and music for Apple devices and as email. Apple Mail is used as an email client to send and receive email messages.

These services are freemail, requiring only signing up to use, but paid subscriptions are also an option. Freemail and subscription options differ in storage space, domain personalization, security features, and third-party app integrations. Subscription rates can go for as low as $1 a month per user to $300 for larger storage space.

Is Gmail the most popular email?

There are over 20 free email providers in English offering both paid and free email services. This does not include providers from other countries with local-language only services. Some notable email providers include Gmail, Outlook, and Yahoo! Mail; new players in the email service provider sphere include ProtonMail, Tutanota, and Zoho Mail, each with their own unique selling point.

Gmail is the most popular email provider with 1.5 billion active user accounts worldwide. Outlook has reported their number of users at 400 million in 2018 and is popular as a business email. Yahoo! Mail has seen a contraction in its user growth with 228 million active subscribers.

The rest have not made a dent in Gmail and the other popular providers’ market share. The new players will not have a lack of subscribers since they offer specific services that the leading email providers do not carry or only offered in limited options.

Emails are classified as Business and Consumer. Business emails continue to rise with the number of sent and received business emails seeing a 3% growth in the last 4 years (The Radical Group, 2019).

Although the number of sent and received business emails outnumber consumer emails, the latter has a higher growth rate—double that of business emails. The growth is due to the prominent use of email in everyday online activities such as shopping, messaging, and video streaming. This should further increase as more marketers plan to send more emails in 2021.

The average office worker receives 126 emails a day. With a ratio of 3 emails received for every email sent. Inboxes get so much activity that employees report using 16% of their weekly work hours on email-related tasks. With an annual email volume of 44,000, only 55% of employees say they are able to achieve inbox-zero (Adobe).

How many emails are sent a year?

There were roughly 306.4 billion emails sent and received in 2020 (The Radical Group, 2020). If the rising trend continues, the figure is expected to increase to over 361.6 billion daily mails in 2024. It’s curious to ponder how many of these emails are opened, sent straight to trash, or are read through with the offers taken up every second.

Email Open Rates

Open rate is a phrase in the email marketing space that measures the number of subscribers who clicked an email to open it. Hubspot suggests a good open-rate for marketing emails to be between 30%-40%. Curiously, the industries with the lowest open-rate are Marketing and Advertising which recipients believe to be too sales-y. Some industries that enjoy a high open-rate include Arts & Entertainment, Human Resources, Construction, and Legal & Government.

What percent of email is opened on a mobile device?

Mobile open rates outnumber desktop open rates by more than half. Email is increasingly mobile with nearly 42% of all emails opened on a smartphone or a tablet.

There is also a preference for mobile when it comes to opens based on the environment with mobile slowly eating into webmail’s market share.

Popular Email Environments and Email Clients

There are 1.5 billion active Gmail user accounts. For webmail email opens, Gmail holds the lion’s share with 26.2% compared to Yahoo! Mail’s 6.6% and Outlook.com’s 2.4%.

Gmail also makes an appearance in email client comparisons.

The leading email clients are Gmail and Apple Mail, their usage rates neck and neck with Apple Mail leading at 29% over Gmail’s 27% market share (Markinblog, 2019). It’s a different story for desktop clients. Other sources report Outlook is the surprise dark horse for desktop email clients with 9.2%, while its closest competitor, Apple Mail, is at 7.8%.

Email clients are distinguished from email providers as applications that are downloaded and installed to devices or computers to view, receive, and send emails. Email providers, on the other hand, are the service that provides the domain of your emails (the words that come after the @ symbol) and stores your messages. Email clients can be configured to receive emails from other providers, Apple Mail and Outlook both can be set up to receive Gmail and Yahoo! Mail, for example.

There were a total of 294 billion emails sent and received daily in 2019. The numbers are only expected to increase with growth projected at 1.044% annually. Breaking down the numbers, it comes to about 559,000 emails sent and received every second.

Email Spam

Kaspersky Lab states that, as of November 2020, approximately 47.3% of emails sent are spam (Kaspersky Lab, 2020). The rate seems high but it actually is going down. The highest reported spam rate is 94% back in 2009. The 68% spam rate only accounts for the mail that gets past spam and security filters.

From where do all these annoying spam emails originate? Russia is the top source of unsolicited emails (Kaspersky Lab, 2020). 23.52% of global spam mail originates from Russia’s ISPs in the third quarter of 2020. Germany follows with 11.01%.

How do spammers get your email address?

Any and all information is available on the internet if you know how and where to get it—spammers know their way and get around. Their tactics range from wild guesses, using a scraper to “harvest” strings of text with the “@” symbol, and buying email lists (sometimes legally, though often through unlawful means). Although most of these are ignored, a study revealed that 43% of companies will spend more on email marketing.

Concerns about spam and email security are high on the list of adults who fear government surveillance on their personal email communications. Despite these fears, only 2% are using email encryption like the service that ProtonMail offers. Instead, most resort to low-level protective actions to keep out unwanted mail such as ignoring emails with unknown senders.

Key Insights

• Steady Growth of Email Users: The number of email users worldwide is projected to grow from 4 billion in 2020 to nearly 4.5 billion by 2024.
• Multiple Email Accounts: On average, users have 1.75 email accounts each, indicating the widespread use of email for different purposes.
• Popular Email Providers: Gmail leads with 1.5 billion users, followed by Outlook (400 million) and Yahoo! Mail (230 million).
• High Daily Email Traffic: In 2020, approximately 306.4 billion emails were sent and received daily, expected to rise to over 361.6 billion by 2024.
• Mobile Dominance: Nearly 42% of all emails are opened on mobile devices, surpassing desktop open rates.
• High Email Engagement: Arts & Entertainment, Human Resources, Construction, and Legal & Government industries have the highest email open rates.
• Spam Concerns: Spam emails constituted 47.3% of all emails in November 2020, with Russia being the top source.
• Protective Measures: Users commonly avoid opening emails from unknown senders and disclose less personal information online to combat spam.

FAQ

1. How many email users are there in the world? There are 4 billion email users worldwide as of 2020. The figure represents over half of the world’s population and is forecast to grow at a steady 3% annual rate, reaching close to 4.5 billion by 2024.
2. How many email accounts are there compared to email users? The number of email accounts is higher than the number of email users, with 5.59 billion active email accounts in 2020. This is nearly 1.5 times the number of users, as many people have multiple email accounts for different purposes.
3. What is the average number of email accounts per person? The average number of email accounts per person is 1.75. Users typically have multiple accounts for various purposes such as business, personal communication, shopping, and subscriptions.
4. What percentage of adults in the UK use email? Email is used by 86% of the adult population in the UK. The age group that uses email the most is 35-44, followed closely by the 25-34 age group.
5. How does email usage vary by age group in the US? Email usage is high across all age groups in the US. In 2019, 93.6% of people aged 25-44 used email, followed by 90.1% of those aged 45-64, and 90% of individuals aged 15-24. The usage rate for those aged 65 and above is 84.1%.
6. Is there a significant difference in email usage by gender in the US? As of 2019, 91.1% of female internet users in the US use email, compared to 89.4% of males. Overall, 90.3% of internet users in the US access and use their emails regularly.
7. Which email provider is the most popular? Gmail is the most popular email provider, with 1.5 billion active users worldwide. Outlook and Yahoo! Mail follow, with 400 million and 230 million users, respectively.
8. How many emails are sent and received daily? In 2020, roughly 306.4 billion emails were sent and received daily. This number is expected to increase to over 361.6 billion by 2024.
9. What are the email open rates across different devices? Nearly 42% of all emails are opened on mobile devices, which is more than double the rate of desktop email opens.
10. What percentage of emails are spam? As of November 2020, approximately 47.3% of all emails sent were classified as spam. Russia is the leading country of origin for spam emails, followed by Germany and the United States.

References:

1. 99Firms. (2020). How Many Email Users Are There? 99Firms
2. Adobe. (2018). 2018 Adobe Consumer Email Survey. Adobe
3. Android Police. (2018). Gmail Now Has More than 1.5 Billion Active Users. Android Police
4. Convince&Convert. (2019). 13 Email Marketing Statistics That are Shaping 2019 and Beyond. Convince&Convert
5. Kaspersky Lab. (2020). Global Spam Volume as Percentage of Total E-mail Traffic From January 2014 to September 2020 by month. Kaspersky Lab
6. Markinblog. (2021). List of Largest Internet Companies in the World in 2021 (Ranked by Revenue). Markingblog
7. Ofcom. (2020). Adult Media Usage and Attitudes 2020. Ofcom
8. Office for National Statistics. (2019). Internet Access – Households and Individuals, Great Britain: 2019. Office for National Statistics
9. The Radicati Group. (2020). Email Statistics Report, 2015-2019. The Radicati Group
10. US Census Bureau; NTIA. (2020). Digital Nation Data Explorer. NTIA

By Nestor Gilbert

Nestor Gilbert is a senior B2B and SaaS analyst and a core contributor at FinancesOnline for over 5 years. With his experience in software development and extensive knowledge of SaaS management, he writes mostly about emerging B2B technologies and their impact on the current business landscape. However, he also provides in-depth reviews on a wide range of software solutions to help businesses find suitable options for them. Through his work, he aims to help companies develop a more tech-forward approach to their operations and overcome their SaaS-related challenges.