How Many Emails Are Sent Per Day in 2025? (UPDATED Data)

Not many of the younger generations will remember when the postman was one of the only widely accessible means of sending letters long distance.

As time passed, email technology was invented and refined, which made letter-sending much easier, faster and more convenient.

Today, approximately 347.3 billion emails are sent per day, which works out at well over 4 million emails per second.

That’s a lot of emails.

As a result, those statistics prove that email is the most used communication medium for business interactions.

Email is also one of the cheapest marketing tools used by all sorts of businesses – from small brands to industry giants.

This article focuses on how many emails are sent per day in 2025, as well as daily email usage stats across the world.

Key Daily Email Statistics in 2025

• 99% of email users check their inbox at least once a day
• 347.3 billion emails are sent per day
• over 4million emails are sent per second
• 20% of Americans check their email inbox more than five times a day.
• 85% of all emails are spam
• $7000 earned per day by sending bulk emails
• 100 million spam emails are blocked by Gmail every day
• 31 billion emails bounce per day
• 58% of Gen Z check email multiple times in a day
• 66% of Gen Z receive less than 20 emails daily
• Plain Text emails got a 42% open rate compared to the HTML emails

What Is the Most Used Email Client Worldwide?

As you can see in the chart (prepared by Litmus), Apple email client comes first in the most popular email clients globally, followed by Gmail.

However, while Apple and Gmail have a close chase, the third most used email service provider is Outlook which falls low with 9% compared to the top 2.

How Many Emails are Sent per Day in 2025? And Other Statistics

Now discover in-depth emails sending stats, and we will check out some other interesting daily email usage statistics as well.

1. 99% of Email Users Check Their Inbox at Least Once a Day

Now, this statistic is the minimum number of inbox visits in a day.

Nowadays, every brand uses email to connect with its customers.

Also, people send and receive so many work emails in a day.

On average, a person checks the email 15 times!

Based on a study about people’s behavior, the survey found that people who check fewer emails(3 or less) felt less stress!

2. 126 Business Emails Are Sent/Recieved Per User/Day

Based on current statistics, the email usage growth rate will be 3% by 2022.

There are several social media platforms for people to communicate with each other.

When it comes to the corporate field, specific tools are specifically designed for communication purposes (E.g., Slack).

However, people still prefer emails over any replacements.

Significantly, the corporate industry relies on emails for most of the official communications.

3. 347.3 Billion Emails Are Sent Per Day in 2025

Wondering how many emails are sent per day in the world in 2025?

Report data shows that the daily email sent count crossed 300 billion in 2020, with 319.6 billion in 2021, 333.2 billion in 2022, and a whopping 347.3 billion emails sent per day in 2023.

That means that more than 4 million emails are sent per second.

And the number is still growing.

Based on the research data, it’s likely that people will send and receive more than 376 billion emails per day by 2025.

4. 40 Work Emails Sent Per Day

On average, an office employee delivers more than 40 emails in a day.

However, the total emails received by an office employee in a day are between 100 and 120.

These statistics prove that Email is an essential part of business communication and cannot be replaced by the latest social media communication technologies.

5. Email Is the Third-Most Crucial Influential Source of Information

Colleague recommendation is the most meaningful information in the B2B market.

Second, recommendations from Industry experts follow it.

And the third most important information comes from Email.

Almost 86% of professional employees prefer Email for all kinds of official communications.

It includes leaving letters, daily/weekly/quarterly progress reports, Salary appraisal requests, Termination requests, etc.

6. 20% of Americans Check Their Email Inbox More than Five Times a Day.

In 2015, a company named Fluent conducted a survey among 1603 Americans.

There were people of all ages between 18 and 65. According to the survey statistics, 89% of Americans check their inbox regularly.

About 27% of them check emails 1 to 5 times a day. 42% of the Americans subscribed to receive emails from brands to get customized discounts and promotional offers.

60% of people use a single email account for all purposes.

And people aged between 18-24 has multiple emails to manage office and personal purposes separately.

7. 85% of All Emails Are Spam Mails

According to stats, nearly 122.23 billion spam emails are sent every day.

At the same time, cross-checking with the total number of emails sent in a day, the count of spam emails is huge.

If all of the spam emails are filtered, only 22.43 billion emails have legitimate content!

At one time in 2020, the maximum spam email count was recorded as 316 billion!

The latest stats show that the average count of spam emails is reducing.

The intelligent algorithms of most client emails can detect and block spam emails.

And most people are not interested in opening spam emails if they get suspicious from reading the subject content.

8. $7000 Earned per Day by Sending Bulk Emails

Certain brands and businesses outsource bulk-mailing to specialist groups.

Such people or groups will be experts in sending spam emails to the target audience.

As a result, they receive an average of $7000 in a day even without showing any success reports!

9. 100 Million Spam Emails Are Blocked by Gmail Every Day

27% of all the emails opened are of Gmail. It has around 1.8 billion registered users.

The advanced machine learning techniques implemented by Gmail easily filter the majority of spam emails.

The Gmail metrics show that they are blocking almost 10 million spam-related emails in a minute!

Google says they can stop 99.9% of the malware and phishing spam mails before reaching the Gmail inbox. In addition, Gmail is the most preferent email client by all age groups.

10. Professionals Respond to 25% of The Emails Received.

When compared to ordinary users, professional’s email inboxes may contain 200 emails on average.

Since most official communications are handled using email, professionals check their emails every 30-37 minutes.

According to these stats, a professional checks email at least once every 15 minutes.

How Many Marketing Emails Are Sent Per Day?

Email is a beautiful medium to reach people at the right time.

Businesses and brands rely upon emails for communicating with themselves and customers.

There are several reasons by which email marketing is still trending.

11. 143 Minutes of Each Weekday Spend Checking Emails

The email users will grow at a rate of 100 million per year in the next 4-5 years.

Brands claim that they get a great response through email marketing on average based on email marketing statistics.

12. High Returns from Low Investments

For every marketing email sent with a $1 investment, the ROI is expected to be $42!

Email marketing is considered to be the cheapest method of advertising and marketing opted by businesses.

It has a vast potential to communicate with the target audience far better than the other costly marketing methods.

13. 60% Click Rate Increase in 2020

How many people eat food from restaurants and order food online daily?

About 42% of all food orders placed in the world are online.

Every day people try different food items based on the options provided by the businesses.

If restaurants and online food brands can email their clients to illustrate the promotional offers applicable for the day, then there is a 60% chance that the people will check those items.

14. 31% Daily Open Rates Since 2020

The Covid-19 pandemic has changes people’s behavior in many things. It includes their consumer character.

Usually, eCommerce sites and online services receive a second chance in the absence of regular retail shops and restaurants.

But the unexpected lockdown pushed people to depend upon online transactions than usual.

Sometimes it was the only available option for many people.

Most of the eCommerce sites and online services demand an email from the customer to confirm their account.

After understanding customer behavior, brands use emails to provide them with customized offers to buy the searched products.

Businesses noted that almost 78% of emails sent per day received a response from the customers.

15. 31 Billion Emails Bounce Per Day

Even though email is an effective tool for customer-oriented marketing, there are high chances for the anti-spam mechanisms to block down some emails.

For every 100 emails sent in a day, 15 of them are blocked and never reach the customer inbox.

The 85% success rate seems pretty ok at first glance.

But when the total count becomes high, the average bounce rate of email seems significant.

Brands can follow specific simple steps to overcome the email bouncing issue.

The essential point is to be honest, as the email should contain genuine details to convince the spam detection bot and the customer.