GITNUXREPORT 2025

Email Marketing Industry Statistics

Email marketing industry thrives with personalized, mobile-driven campaigns, generating billions.

Jannik Linder

Co-Founder of Gitnux, specialized in content and tech since 2016.

First published: April 29, 2025

Our Commitment to Accuracy

Rigorous fact-checking • Reputable sources • Regular updatesLearn more

Statistic 1

Over 333.2 billion emails are sent and received each day worldwide

Statistic 2

About 49% of consumers say they’ve made purchase decisions based on promotional emails

Statistic 3

Personalized emails deliver 6x higher transaction rates

Statistic 4

78% of marketers have seen an increase in email engagement over the past year

Statistic 5

69% of consumers say they are likely to report emails as spam if they don’t recognize the sender

Statistic 6

51% of consumers subscribe to marketing emails from brands they love

Statistic 7

80% of marketers report that email marketing increases user engagement

Statistic 8

60% of consumers say they’ve made a purchase as a result of receiving a personalized email

Statistic 9

Promotional emails account for over 30% of all email opens

Statistic 10

91% of consumers want to receive promotional emails at least monthly

Statistic 11

Emails containing videos see a 300% increase in click-through rates

Statistic 12

The average email list decay rate is 22.5% annually, indicating the importance of list maintenance

Statistic 13

The most effective email subject line length ranges between 41-50 characters

Statistic 14

90% of consumers check their email daily, making it a critical channel for outreach

Statistic 15

The average time spent reading an email is approximately 13 seconds

Statistic 16

Over 50% of emails are opened on mobile devices, highlighting the need for mobile-optimized emails

Statistic 17

Including social sharing buttons in emails can increase sharing by 30%

Statistic 18

40% of consumers say they will unsubscribe from emails if they find the content irrelevant, highlighting the need for targeted messaging

Statistic 19

The average number of emails sent per subscriber per month is about 1.4, indicating a moderate sending frequency

Statistic 20

The usage of GIFs in email campaigns has increased by 55% over the past two years, improving engagement

Statistic 21

The average number of email subscribers per list in 2023 is approximately 2,200, demonstrating growth in mailing lists

Statistic 22

85% of marketers say that email is their most used channel for customer retention

Statistic 23

72% of consumers prefer communication from brands via email, over social media or phone calls

Statistic 24

The average open rate for email marketing campaigns across industries is approximately 21.33%

Statistic 25

The click-through rate (CTR) for email marketing averages around 2.62%

Statistic 26

The best days for email marketing are Tuesday and Thursday, with open rates peaking on these days

Statistic 27

Emails with personalized subject lines are 26% more likely to be opened

Statistic 28

The average unsubscribe rate in email marketing is approximately 0.2%

Statistic 29

The average length of successful marketing emails is between 50-125 words

Statistic 30

Transactional emails have an open rate of approximately 45.7%

Statistic 31

Sending emails at the right time can increase open rates by up to 22%

Statistic 32

B2B companies see an average open rate of 15–20%

Statistic 33

The average cost per lead from email marketing is around $0.03

Statistic 34

The use of emojis in email subject lines increases open rates by 56%

Statistic 35

The average email bounce rate is around 0.7%, emphasizing the importance of list hygiene

Statistic 36

The average open rate for welcome emails is approximately 82%, higher than typical marketing emails

Statistic 37

The click-to-open rate (CTOR) average across industries is approximately 11.37%

Statistic 38

Cart abandonment emails have an average open rate of 45.7%, with a conversion rate of 3.6%

Statistic 39

Over 10% of marketing emails are opened on weekends, with Saturday and Sunday having the highest engagement

Statistic 40

The global average email marketing bounce rate is around 0.2-0.7%, depending on the industry

Statistic 41

The average conversion rate for email opt-in forms is approximately 1.7%, indicating potential for list growth

Statistic 42

58% of marketers send emails weekly, maintaining consistent communication with their audiences

Statistic 43

45% of marketers do not segment their email lists, potentially decreasing campaign effectiveness

Statistic 44

Effective email marketing can boost customer retention by up to 20%

Statistic 45

The use of AI in email marketing is expected to grow at a CAGR of 27% through 2026

Statistic 46

In 2023, 70% of marketers said they plan to increase their email marketing budget, indicating growth confidence

Statistic 47

Mobile opens account for over 61% of all email opens

Statistic 48

The global email marketing industry is expected to be worth $17.9 billion by 2027

Statistic 49

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

Statistic 50

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

Statistic 51

Retailers see conversion rates of 3-5% from email marketing campaigns

Statistic 52

Email marketing revenue for small businesses is projected to reach $4.2 billion in 2023

Statistic 53

Email marketing contributes to 24% of revenue for e-commerce companies

Statistic 54

Email marketing personalization can increase revenue by 10% or more

Slide 1 of 54

Sources

Our Reports have been cited by:

Trust Badges - Publications that have cited our reports

Key Highlights

Over 333.2 billion emails are sent and received each day worldwide
The global email marketing industry is expected to be worth $17.9 billion by 2027
The average open rate for email marketing campaigns across industries is approximately 21.33%
The click-through rate (CTR) for email marketing averages around 2.62%
About 49% of consumers say they’ve made purchase decisions based on promotional emails
Personalized emails deliver 6x higher transaction rates
78% of marketers have seen an increase in email engagement over the past year
Mobile opens account for over 61% of all email opens
The average ROI for email marketing is $42 for every $1 spent
The best days for email marketing are Tuesday and Thursday, with open rates peaking on these days
Emails with personalized subject lines are 26% more likely to be opened
58% of marketers send emails weekly, maintaining consistent communication with their audiences
69% of consumers say they are likely to report emails as spam if they don’t recognize the sender

Email marketing continues to dominate digital outreach, with over 333 billion emails sent daily worldwide and a projected industry worth of nearly $18 billion by 2027, reflecting its vital role in business growth and customer engagement.

Audience Engagement and Consumer Behavior

Over 333.2 billion emails are sent and received each day worldwide
About 49% of consumers say they’ve made purchase decisions based on promotional emails
Personalized emails deliver 6x higher transaction rates
78% of marketers have seen an increase in email engagement over the past year
69% of consumers say they are likely to report emails as spam if they don’t recognize the sender
51% of consumers subscribe to marketing emails from brands they love
80% of marketers report that email marketing increases user engagement
60% of consumers say they’ve made a purchase as a result of receiving a personalized email
Promotional emails account for over 30% of all email opens
91% of consumers want to receive promotional emails at least monthly
Emails containing videos see a 300% increase in click-through rates
The average email list decay rate is 22.5% annually, indicating the importance of list maintenance
The most effective email subject line length ranges between 41-50 characters
90% of consumers check their email daily, making it a critical channel for outreach
The average time spent reading an email is approximately 13 seconds
Over 50% of emails are opened on mobile devices, highlighting the need for mobile-optimized emails
Including social sharing buttons in emails can increase sharing by 30%
40% of consumers say they will unsubscribe from emails if they find the content irrelevant, highlighting the need for targeted messaging
The average number of emails sent per subscriber per month is about 1.4, indicating a moderate sending frequency
The usage of GIFs in email campaigns has increased by 55% over the past two years, improving engagement
The average number of email subscribers per list in 2023 is approximately 2,200, demonstrating growth in mailing lists
85% of marketers say that email is their most used channel for customer retention

Audience Engagement and Consumer Behavior Interpretation

With over 333 billion daily emails fueling billions in purchases, personalized content rocking a sixfold transaction boost, and mobile-optimized, video-rich campaigns driving higher engagement, it's clear that in the inbox jungle, relevance and strategy are the real keys to staying afloat—and avoiding the spam bin.

Consumer Behavior

72% of consumers prefer communication from brands via email, over social media or phone calls

Consumer Behavior Interpretation

With 72% of consumers favoring email over social media or calls, brands must recognize that in the digital age, a well-crafted email isn't just a message—it's the inbox's reigning king for consumer connection.

Email Performance Metrics and Open Rates

The average open rate for email marketing campaigns across industries is approximately 21.33%
The click-through rate (CTR) for email marketing averages around 2.62%
The best days for email marketing are Tuesday and Thursday, with open rates peaking on these days
Emails with personalized subject lines are 26% more likely to be opened
The average unsubscribe rate in email marketing is approximately 0.2%
The average length of successful marketing emails is between 50-125 words
Transactional emails have an open rate of approximately 45.7%
Sending emails at the right time can increase open rates by up to 22%
B2B companies see an average open rate of 15–20%
The average cost per lead from email marketing is around $0.03
The use of emojis in email subject lines increases open rates by 56%
The average email bounce rate is around 0.7%, emphasizing the importance of list hygiene
The average open rate for welcome emails is approximately 82%, higher than typical marketing emails
The click-to-open rate (CTOR) average across industries is approximately 11.37%
Cart abandonment emails have an average open rate of 45.7%, with a conversion rate of 3.6%
Over 10% of marketing emails are opened on weekends, with Saturday and Sunday having the highest engagement
The global average email marketing bounce rate is around 0.2-0.7%, depending on the industry
The average conversion rate for email opt-in forms is approximately 1.7%, indicating potential for list growth

Email Performance Metrics and Open Rates Interpretation

While mastering email marketing’s sweet spots like optimal days, personalized subject lines, and emoji magic can boost open rates from 21% to nearly 83% on welcome emails, the real challenge remains in turning those opens into clicks and conversions, all while keeping your bounce rate below 1% and your costs at a budget-friendly $0.03 a lead—proof that in email marketing, timing and tailored content are still king, but engagement is the ultimate throne.

Marketing Strategies and Personalization Techniques

58% of marketers send emails weekly, maintaining consistent communication with their audiences
45% of marketers do not segment their email lists, potentially decreasing campaign effectiveness
Effective email marketing can boost customer retention by up to 20%
The use of AI in email marketing is expected to grow at a CAGR of 27% through 2026
In 2023, 70% of marketers said they plan to increase their email marketing budget, indicating growth confidence

Marketing Strategies and Personalization Techniques Interpretation

With 58% of marketers maintaining weekly email contact and 70% planning increased budgets, yet nearly half neglecting list segmentation, it’s clear that while email marketing is a growing priority and AI is set to revolutionize efficiency, strategic segmentation remains the missing link to truly maximize campaign impact.

Open Rates

Mobile opens account for over 61% of all email opens

Open Rates Interpretation

With over 61% of email opens occurring on mobile devices, the email marketing industry must prioritize mobile-friendly strategies or risk losing the majority of its audience in the palm of their hands.

Revenue Generation and ROI Insights

The global email marketing industry is expected to be worth $17.9 billion by 2027
The average ROI for email marketing is $42 for every $1 spent
Automated emails generate 320% more revenue than non-automated emails
Retailers see conversion rates of 3-5% from email marketing campaigns
Email marketing revenue for small businesses is projected to reach $4.2 billion in 2023
Email marketing contributes to 24% of revenue for e-commerce companies
Email marketing personalization can increase revenue by 10% or more

Revenue Generation and ROI Insights Interpretation

With a projected worth of $17.9 billion by 2027 and an astonishing $42 return for every dollar spent, email marketing continues to be the digital marketer's golden goose—especially when personalized automation drives up revenues and retail conversion rates hover around 3-5%, proving yet again that in the inbox, relevance is king.