GITNUXREPORT 2026

Emailing Statistics

Email volume continues to rise globally, remaining essential for business and marketing communications.

Min-ji Park

Research Analyst focused on sustainability and consumer trends.

First published: Feb 13, 2026

Our Commitment to Accuracy

Rigorous fact-checking · Reputable sources · Regular updatesLearn more

Statistic 1

Average email open rate across all industries is 21.33%.

Statistic 2

Click-to-open rate (CTOR) averages 10.5% for marketing emails.

Statistic 3

B2C click-through rate is 2.63%, higher than B2B's 2.36%.

Statistic 4

Personalized subject lines boost open rates by 22.2%.

Statistic 5

Emails sent on Tuesday have 5% higher open rates.

Statistic 6

Average unsubscribe rate is 0.5% per campaign.

Statistic 7

Mobile opens account for 47.1% of total opens.

Statistic 8

Welcome emails achieve 4x industry average open rates.

Statistic 9

CTOR for e-commerce emails is 15.5%.

Statistic 10

Bounce rate averages 2.4% for clean lists.

Statistic 11

Emojis in subject lines increase opens by 45%.

Statistic 12

Afternoon sends (1-3 PM) have 28% higher opens.

Statistic 13

List growth rate averages 1.5% monthly for top performers.

Statistic 14

Forward-to-friend rates average 0.4%.

Statistic 15

Short subject lines (<50 chars) get 12% more opens.

Statistic 16

Desktop opens 52.9%, mobile 47.1% in 2023.

Statistic 17

Industry-high open rate is 28.43% for nonprofits.

Statistic 18

CTR peaks at 3.67% for education sector.

Statistic 19

69% of consumers delete unread promotional emails.

Statistic 20

Average scan time for email is 11.2 seconds.

Statistic 21

GIFs increase CTR by 42% in emails.

Statistic 22

Best send day is Tuesday with 19% open rate.

Statistic 23

Spam complaint rate under 0.1% for best practices.

Statistic 24

Handwritten fonts boost replies by 28%.

Statistic 25

75% of recipients make judgments in 3 seconds.

Statistic 26

Dark mode opens rose to 52% in email clients.

Statistic 27

Email volume to grow 4.2% annually to 2027.

Statistic 28

Generative AI integration in email tools up 200% in 2023.

Statistic 29

Zero-party data usage in email marketing rose 40%.

Statistic 30

Privacy-focused email regulations impact 70% of senders.

Statistic 31

Interactive AMP emails adopted by 15% of brands.

Statistic 32

Email marketing spend to hit $17.9 billion by 2027.

Statistic 33

Mobile-first design now standard for 90% of campaigns.

Statistic 34

AI-driven personalization used by 72% of marketers.

Statistic 35

Decline in third-party cookies boosts first-party email data 50%.

Statistic 36

Sustainability in email: 25% reduction in image sizes.

Statistic 37

Cross-channel orchestration with email up 35%.

Statistic 38

Headless CMS for email grew 60% in adoption.

Statistic 39

Voice assistant email integration emerging, 10% trial rate.

Statistic 40

Web3 and NFT verification via email pilots by 5% brands.

Statistic 41

Global email ad spend CAGR 12.5% to 2028.

Statistic 42

Decline of SMS in favor of email RCS hybrids.

Statistic 43

65% of marketers plan AI content generation for emails.

Statistic 44

Privacy sandbox alternatives boost email consent rates 20%.

Statistic 45

Video in email playback rates hit 25% with HTML5.

Statistic 46

Collaborative inbox tools market to $5B by 2027.

Statistic 47

Email marketing has an average ROI of $36 for every $1 spent.

Statistic 48

59% of marketers say email is their most effective revenue driver.

Statistic 49

Personalized emails improve open rates by 26%.

Statistic 50

Automated emails generate 320% more revenue than non-automated.

Statistic 51

81% of SMBs rely on email as primary customer acquisition channel.

Statistic 52

Email generates $42 ROI for every $1 spent in 2023.

Statistic 53

4.29% average click-through rate for email campaigns.

Statistic 54

Segmented campaigns boost revenue by 760%.

Statistic 55

78% of consumers say transactional emails influence purchases.

Statistic 56

Mobile-optimized emails see 15% higher click rates.

Statistic 57

Abandoned cart emails have 45% open rates on average.

Statistic 58

Email newsletters have 40.6% higher open rates than regular emails.

Statistic 59

66% of consumers make purchases from promotional emails.

Statistic 60

B2B emails average 15.14% open rate.

Statistic 61

Welcome emails have 91.43% open rates and 26.94% CTR.

Statistic 62

Re-engagement campaigns recover 10-30% of lost customers.

Statistic 63

47% of brands use email list segmentation.

Statistic 64

Email drives 4x more website traffic than social media.

Statistic 65

80% of retail emails are opened on mobile devices.

Statistic 66

Post-purchase emails increase customer lifetime value by 10%.

Statistic 67

Subject lines under 50 characters have 12% higher opens.

Statistic 68

Behavioral targeting lifts response rates by 8x.

Statistic 69

73% of marketers use email for lead nurturing.

Statistic 70

Cart recovery emails have $3.45 revenue per recipient.

Statistic 71

89% of marketers say email is top revenue channel.

Statistic 72

A/B tested emails improve performance by 37%.

Statistic 73

320% more revenue from automated welcome series.

Statistic 74

In 2023, 85% of all emails were spam, totaling over 300 billion daily.

Statistic 75

Phishing attacks via email rose 58% in 2023.

Statistic 76

1 in 455 emails sent contains malware in 2023.

Statistic 77

94% of malware is delivered via email.

Statistic 78

Business Email Compromise (BEC) scams cost $2.9 billion in 2023.

Statistic 79

300 billion spam emails sent daily, representing 50% of total traffic.

Statistic 80

Email-based phishing accounts for 36% of breaches.

Statistic 81

83% of UK businesses suffered email security breach in past year.

Statistic 82

Ransomware delivered via email in 93% of cases.

Statistic 83

14,000 phishing sites detected daily, mostly email-linked.

Statistic 84

99% of emails from external sources are filtered as spam.

Statistic 85

Spear-phishing success rate is 70% for targeted attacks.

Statistic 86

Email spoofing involved in 80% of BEC incidents.

Statistic 87

62% of organizations faced phishing attacks in 2023.

Statistic 88

Malicious URLs in emails clicked 11% of the time.

Statistic 89

91% of cyberattacks begin with phishing email.

Statistic 90

Spam filtering accuracy reached 99.9% in enterprise systems.

Statistic 91

BEC losses averaged $120,000 per incident in 2023.

Statistic 92

3.4 billion spam emails blocked daily by Gmail.

Statistic 93

76% of security pros say email is biggest threat vector.

Statistic 94

Email attachments cause 92.4% of malware infections.

Statistic 95

48% of phishing emails impersonate brands.

Statistic 96

Zero-day exploits via email up 50% in 2023.

Statistic 97

25% of breaches involve compromised email credentials.

Statistic 98

Average time to identify email breach is 204 days.

Statistic 99

Global email server market size reached $2.8 billion in 2023.

Statistic 100

Microsoft Exchange holds 40% market share in enterprise email servers.

Statistic 101

Gmail processes 15 billion emails daily with 99.978% uptime.

Statistic 102

Average email size is 75KB, up 50% since 2015.

Statistic 103

Outlook client market share is 11% among desktop users.

Statistic 104

56% of emails use HTML formatting in 2023.

Statistic 105

Email encryption market to grow to $14.1 billion by 2028.

Statistic 106

Apple Mail has 52.45% share on iOS devices.

Statistic 107

DKIM adoption rate is 85% among enterprise senders.

Statistic 108

Global email traffic bandwidth consumes 2% of internet.

Statistic 109

SPF records implemented by 92% of Fortune 500 domains.

Statistic 110

Average email delivery time is 7.37 seconds.

Statistic 111

Gmail holds 36% of webmail market share.

Statistic 112

BIMI adoption increased 300% in 2023 to 1,000 brands.

Statistic 113

Email storage averages 50GB per user in enterprises.

Statistic 114

28% of email clients now support interactive elements.

Statistic 115

DMARC enforcement rate at 45% for top domains.

Statistic 116

AMP for Email supported in 75% of major clients.

Statistic 117

IPv6 adoption in email servers at 35% globally.

Statistic 118

Average inbox processing power uses 13% of CPU.

Statistic 119

Outlook.com has 5% global webmail share.

Statistic 120

Email authentication failures cause 2-5% deliverability loss.

Statistic 121

Dark mode rendering supported by 85% of clients.

Statistic 122

In 2023, the average professional receives 121 business emails per day, up from 112 in 2022.

Statistic 123

Global email users are projected to reach 4.6 billion by 2027, growing at a CAGR of 3.4%.

Statistic 124

Daily email volume worldwide exceeded 361.6 billion in 2023.

Statistic 125

60% of the global population uses email as their primary communication method.

Statistic 126

Office workers check their email 15 times per hour on average.

Statistic 127

307.6 billion emails are sent daily across all categories including spam.

Statistic 128

Email accounts for 124.46 emails sent and received per day by the average person.

Statistic 129

99% of consumers check their email daily, including 56% checking on mobile first.

Statistic 130

By 2025, there will be 4.4 billion email users worldwide.

Statistic 131

Businesses send 112.5 billion business emails daily in 2023.

Statistic 132

47% of email opens occur on mobile devices globally.

Statistic 133

Average email user has 1.9 mobile email apps installed.

Statistic 134

64% of small businesses cite email as their top marketing channel.

Statistic 135

Email traffic is expected to reach 376.4 billion per day by 2027.

Statistic 136

78% of salespeople using email automation see 10%+ revenue increase.

Statistic 137

Average consumer receives 6 marketing emails per week.

Statistic 138

53% of emails are opened on mobile devices in the US.

Statistic 139

Email volume grew by 4.3% year-over-year in 2023.

Statistic 140

92% of internet users aged 18+ have at least one email account.

Statistic 141

Workers spend 28% of workday reading and answering email.

Statistic 142

Global email users numbered 4.3 billion in 2023.

Statistic 143

85% of people check email first thing in the morning.

Statistic 144

Average office worker sends 40 emails per day.

Statistic 145

70% of emails are read on mobile or webmail clients.

Statistic 146

Email open rates average 21.33% across industries.

Statistic 147

50% of emails are opened within 3 seconds of receipt.

Statistic 148

B2C emails have 10x higher engagement than B2B.

Statistic 149

4.24 billion email users expected by end of 2024.

Statistic 150

58% of emails are opened on smartphones.

Statistic 151

Average email inbox holds 199 unread emails.

1/151

Sources

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Every day, a tidal wave of over 361 billion emails floods our inboxes, yet navigating this essential channel effectively is the key to cutting through the noise and driving real results.

Key Takeaways

In 2023, the average professional receives 121 business emails per day, up from 112 in 2022.
Global email users are projected to reach 4.6 billion by 2027, growing at a CAGR of 3.4%.
Daily email volume worldwide exceeded 361.6 billion in 2023.
Email marketing has an average ROI of $36 for every $1 spent.
59% of marketers say email is their most effective revenue driver.
Personalized emails improve open rates by 26%.
In 2023, 85% of all emails were spam, totaling over 300 billion daily.
Phishing attacks via email rose 58% in 2023.
1 in 455 emails sent contains malware in 2023.
Average email open rate across all industries is 21.33%.
Click-to-open rate (CTOR) averages 10.5% for marketing emails.
B2C click-through rate is 2.63%, higher than B2B's 2.36%.
Global email server market size reached $2.8 billion in 2023.
Microsoft Exchange holds 40% market share in enterprise email servers.
Gmail processes 15 billion emails daily with 99.978% uptime.

Email volume continues to rise globally, remaining essential for business and marketing communications.

Engagement Statistics

Average email open rate across all industries is 21.33%.
Click-to-open rate (CTOR) averages 10.5% for marketing emails.
B2C click-through rate is 2.63%, higher than B2B's 2.36%.
Personalized subject lines boost open rates by 22.2%.
Emails sent on Tuesday have 5% higher open rates.
Average unsubscribe rate is 0.5% per campaign.
Mobile opens account for 47.1% of total opens.
Welcome emails achieve 4x industry average open rates.
CTOR for e-commerce emails is 15.5%.
Bounce rate averages 2.4% for clean lists.
Emojis in subject lines increase opens by 45%.
Afternoon sends (1-3 PM) have 28% higher opens.
List growth rate averages 1.5% monthly for top performers.
Forward-to-friend rates average 0.4%.
Short subject lines (<50 chars) get 12% more opens.
Desktop opens 52.9%, mobile 47.1% in 2023.
Industry-high open rate is 28.43% for nonprofits.
CTR peaks at 3.67% for education sector.
69% of consumers delete unread promotional emails.
Average scan time for email is 11.2 seconds.
GIFs increase CTR by 42% in emails.
Best send day is Tuesday with 19% open rate.
Spam complaint rate under 0.1% for best practices.
Handwritten fonts boost replies by 28%.
75% of recipients make judgments in 3 seconds.
Dark mode opens rose to 52% in email clients.

Engagement Statistics Interpretation

While Tuesday afternoons are the digital equivalent of a packed house where a witty, personalized subject line with an emoji is your star performer, remember the audience is fickle, judging in seconds and deleting most acts without an encore.

Market Trends

Email volume to grow 4.2% annually to 2027.
Generative AI integration in email tools up 200% in 2023.
Zero-party data usage in email marketing rose 40%.
Privacy-focused email regulations impact 70% of senders.
Interactive AMP emails adopted by 15% of brands.
Email marketing spend to hit $17.9 billion by 2027.
Mobile-first design now standard for 90% of campaigns.
AI-driven personalization used by 72% of marketers.
Decline in third-party cookies boosts first-party email data 50%.
Sustainability in email: 25% reduction in image sizes.
Cross-channel orchestration with email up 35%.
Headless CMS for email grew 60% in adoption.
Voice assistant email integration emerging, 10% trial rate.
Web3 and NFT verification via email pilots by 5% brands.
Global email ad spend CAGR 12.5% to 2028.
Decline of SMS in favor of email RCS hybrids.
65% of marketers plan AI content generation for emails.
Privacy sandbox alternatives boost email consent rates 20%.
Video in email playback rates hit 25% with HTML5.
Collaborative inbox tools market to $5B by 2027.

Market Trends Interpretation

Amidst a landscape where AI cranks out content and regulations tighten privacy screws, email is quietly—and cleverly—evolving from a spammy blast into a sophisticated, consent-powered conversation that brands and consumers might actually enjoy.

Marketing Statistics

Email marketing has an average ROI of $36 for every $1 spent.
59% of marketers say email is their most effective revenue driver.
Personalized emails improve open rates by 26%.
Automated emails generate 320% more revenue than non-automated.
81% of SMBs rely on email as primary customer acquisition channel.
Email generates $42 ROI for every $1 spent in 2023.
4.29% average click-through rate for email campaigns.
Segmented campaigns boost revenue by 760%.
78% of consumers say transactional emails influence purchases.
Mobile-optimized emails see 15% higher click rates.
Abandoned cart emails have 45% open rates on average.
Email newsletters have 40.6% higher open rates than regular emails.
66% of consumers make purchases from promotional emails.
B2B emails average 15.14% open rate.
Welcome emails have 91.43% open rates and 26.94% CTR.
Re-engagement campaigns recover 10-30% of lost customers.
47% of brands use email list segmentation.
Email drives 4x more website traffic than social media.
80% of retail emails are opened on mobile devices.
Post-purchase emails increase customer lifetime value by 10%.
Subject lines under 50 characters have 12% higher opens.
Behavioral targeting lifts response rates by 8x.
73% of marketers use email for lead nurturing.
Cart recovery emails have $3.45 revenue per recipient.
89% of marketers say email is top revenue channel.
A/B tested emails improve performance by 37%.
320% more revenue from automated welcome series.

Marketing Statistics Interpretation

Email marketing isn't just a tool; it's a revenue-generating engine that proves a personal, automated, and well-targeted message is worth its weight in digital gold.

Security and Spam Statistics

In 2023, 85% of all emails were spam, totaling over 300 billion daily.
Phishing attacks via email rose 58% in 2023.
1 in 455 emails sent contains malware in 2023.
94% of malware is delivered via email.
Business Email Compromise (BEC) scams cost $2.9 billion in 2023.
300 billion spam emails sent daily, representing 50% of total traffic.
Email-based phishing accounts for 36% of breaches.
83% of UK businesses suffered email security breach in past year.
Ransomware delivered via email in 93% of cases.
14,000 phishing sites detected daily, mostly email-linked.
99% of emails from external sources are filtered as spam.
Spear-phishing success rate is 70% for targeted attacks.
Email spoofing involved in 80% of BEC incidents.
62% of organizations faced phishing attacks in 2023.
Malicious URLs in emails clicked 11% of the time.
91% of cyberattacks begin with phishing email.
Spam filtering accuracy reached 99.9% in enterprise systems.
BEC losses averaged $120,000 per incident in 2023.
3.4 billion spam emails blocked daily by Gmail.
76% of security pros say email is biggest threat vector.
Email attachments cause 92.4% of malware infections.
48% of phishing emails impersonate brands.
Zero-day exploits via email up 50% in 2023.
25% of breaches involve compromised email credentials.
Average time to identify email breach is 204 days.

Security and Spam Statistics Interpretation

Despite our inboxes boasting a near-perfect 99.9% filter accuracy, the sheer scale and sophistication of email attacks mean the remaining 0.1% represents a multi-billion dollar criminal enterprise that takes us an average of 204 days to even notice.

Technical and Infrastructure Statistics

Global email server market size reached $2.8 billion in 2023.
Microsoft Exchange holds 40% market share in enterprise email servers.
Gmail processes 15 billion emails daily with 99.978% uptime.
Average email size is 75KB, up 50% since 2015.
Outlook client market share is 11% among desktop users.
56% of emails use HTML formatting in 2023.
Email encryption market to grow to $14.1 billion by 2028.
Apple Mail has 52.45% share on iOS devices.
DKIM adoption rate is 85% among enterprise senders.
Global email traffic bandwidth consumes 2% of internet.
SPF records implemented by 92% of Fortune 500 domains.
Average email delivery time is 7.37 seconds.
Gmail holds 36% of webmail market share.
BIMI adoption increased 300% in 2023 to 1,000 brands.
Email storage averages 50GB per user in enterprises.
28% of email clients now support interactive elements.
DMARC enforcement rate at 45% for top domains.
AMP for Email supported in 75% of major clients.
IPv6 adoption in email servers at 35% globally.
Average inbox processing power uses 13% of CPU.
Outlook.com has 5% global webmail share.
Email authentication failures cause 2-5% deliverability loss.
Dark mode rendering supported by 85% of clients.

Technical and Infrastructure Statistics Interpretation

Our email ecosystem has become a bloated digital colossus, running on billions of dollars of infrastructure where the race for security and engagement is as intense as the battle for your overstuffed inbox.

Usage Statistics

In 2023, the average professional receives 121 business emails per day, up from 112 in 2022.
Global email users are projected to reach 4.6 billion by 2027, growing at a CAGR of 3.4%.
Daily email volume worldwide exceeded 361.6 billion in 2023.
60% of the global population uses email as their primary communication method.
Office workers check their email 15 times per hour on average.
307.6 billion emails are sent daily across all categories including spam.
Email accounts for 124.46 emails sent and received per day by the average person.
99% of consumers check their email daily, including 56% checking on mobile first.
By 2025, there will be 4.4 billion email users worldwide.
Businesses send 112.5 billion business emails daily in 2023.
47% of email opens occur on mobile devices globally.
Average email user has 1.9 mobile email apps installed.
64% of small businesses cite email as their top marketing channel.
Email traffic is expected to reach 376.4 billion per day by 2027.
78% of salespeople using email automation see 10%+ revenue increase.
Average consumer receives 6 marketing emails per week.
53% of emails are opened on mobile devices in the US.
Email volume grew by 4.3% year-over-year in 2023.
92% of internet users aged 18+ have at least one email account.
Workers spend 28% of workday reading and answering email.
Global email users numbered 4.3 billion in 2023.
85% of people check email first thing in the morning.
Average office worker sends 40 emails per day.
70% of emails are read on mobile or webmail clients.
Email open rates average 21.33% across industries.
50% of emails are opened within 3 seconds of receipt.
B2C emails have 10x higher engagement than B2B.
4.24 billion email users expected by end of 2024.
58% of emails are opened on smartphones.
Average email inbox holds 199 unread emails.

Usage Statistics Interpretation

The daily digital deluge grows deeper, yet we continue to drown in our own inboxes, hopeful that the next ping holds the reply we desperately await.

Sources & References

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