Email marketing refuses to die, much like those overly enthusiastic people from high school who still invite you to their multi-level marketing “business opportunity” meetings. Despite the rise of social media, AI-powered chatbots, and whatever digital trend we’re all supposed to pretend we understand this week, email remains one of the most effective marketing channels, delivering a jaw-dropping return on investment—$36 for every $1 spent. If only that kind of financial magic worked in other areas of life, like gym memberships or therapy.
With over 4.3 billion global email users and daily email volume set to hit a staggering 376 billion by 2024, businesses have endless opportunities to shove their messages into inboxes—though, judging by the 48,762 unread emails in my promotions tab, not all of them are getting through. The secret, apparently, is segmentation, automation, and personalization. Segmented campaigns generate 760% more revenue than their generic counterparts (which suggests that most of us really just want to be spoken to like we’re special), while automated emails bring in 320% more revenue than traditional batch emails—proving that robots are now better at following up than most humans. Even something as simple as a personalized subject line can boost open rates by 26%, because, as it turns out, people are far more likely to engage when you pretend to know them.
But email marketing isn’t just about engagement—it’s about persuasion. Shoppers spend 128% more when buying through email promotions, which means that somewhere, right now, a marketer is crafting a subject line designed to convince you that, yes, you do need another pair of shoes. The only catch? Email lists degrade by about 22.5% per year, which means marketers must constantly lure in new subscribers like exhausted fishermen casting their nets into an ocean of inboxes.
In this article, we’ll explore the latest email marketing statistics, dissecting what works, what doesn’t, and how businesses can continue to bombard people with emails in a way that actually gets results. Because if there’s one thing we know for sure, it’s that email isn’t going anywhere—no matter how hard we try to ignore it.
- Global Email Users: As of 2021, there are 4 billion daily email users, with this number expected to reach 4.6 billion by 2025. blog.hubspot.com
- Daily Emails Sent: Over 347 billion emails are sent and received each day. blog.hubspot.com
- Email Marketing Revenue: In 2024, email marketing revenue was projected to surpass $9.5 billion globally. statista.com
- Return on Investment (ROI): Email marketing delivers an average ROI of $36 for every $1 spent. blog.hubspot.com
- Marketer Adoption: 31% of marketers utilize email marketing as part of their strategies. blog.hubspot.com
- Small Business Usage: 64% of small businesses leverage email marketing to reach customers. blog.hubspot.com
- Personalization Impact: Emails with personalized subject lines are 26% more likely to be opened. campaignmonitor.com
- Segmentation Benefits: Marketers have observed a 760% increase in revenue from segmented campaigns. campaignmonitor.com
- Automation Efficiency: Automated emails generate 320% more revenue than non-automated emails. campaignmonitor.com
- Transactional Email Performance: Transactional emails achieve 8 times more opens and clicks than other emails and can generate 6 times more revenue. campaignmonitor.com
- Lead Nurturing: Nurtured leads make 47% larger purchases compared to non-nurtured leads. campaignmonitor.com
- List Segmentation Importance: 78% of marketers state that list segmentation is the marketing automation feature they can’t live without. campaignmonitor.com
- Abandoned Cart Emails: Customers receiving automated abandoned shopping cart emails are 2.4 times more likely to complete their purchase. campaignmonitor.com
- Marketing Automation Adoption: 55% of companies are currently using marketing automation. campaignmonitor.com
- Email-Driven Revenue: Email marketing drives an average of $44 for every $1 spent. campaignmonitor.com
- Targeted Campaign ROI: 77% of email ROI comes from segmented, targeted, and triggered campaigns. campaignmonitor.com
- Budget Allocation: 87% of marketers plan to invest more in their email marketing budget. campaignmonitor.com
- Automated Email Conversion Rates: Automated emails drive conversion rates 180% higher than batch emails. campaignmonitor.com
- Email vs. Direct Mail ROI: Email marketing’s ROI is 28.5% compared to 7% for direct mail. campaignmonitor.com
- Email vs. Social Media Conversions: Email marketing produces an average of 174% more conversions than social media. campaignmonitor.com
- Mobile Email Open Rates: Emails opened on mobile devices account for 46% of all email opens. campaignmonitor.com
- Best Day for Open Rates: Monday has the highest email open rates at 22.0%. campaignmonitor.com
- Best Day for Click-Through Rates: Tuesday achieves the highest click-through rates at 2.4%. campaignmonitor.com
- Average Open Rate: Most marketers report an average email open rate of 46-50%. blog.hubspot.com
- Average Click-Through Rate (CTR): The average email click-through rate is between 2.6% and 3%. blog.hubspot.com
- Global Email Users: As of 2023, there are approximately 4.3 billion email users worldwide, accounting for more than half of the global population. porchgroupmedia.com
- Daily Emails Sent: By 2024, the daily number of emails sent globally is projected to reach 376 billion. wix.com
- Email Marketing Revenue: Email marketing revenue worldwide is expected to reach $17.9 billion by 2027. sixthcitymarketing.com
- Average Open Rate: Across all industries, the average email open rate was 32.55% as of August 2024. constantcontact.com
- Click-Through Rate (CTR): In 2024, the average marketing email click-through rate was 2.62%. shopify.com
- Consumer Spending from Emails: Consumers spend 128% more when shopping through email offers compared to other channels. shopify.com
- Mobile Email Opens: As of 2023, 46% of all email opens occur on mobile devices. mailchimp.com
- Personalized Subject Lines: Emails with personalized subject lines are 26% more likely to be opened. mailchimp.com
- Segmentation Impact: Marketers have noted a 760% increase in revenue from segmented email campaigns. mailchimp.com
- Automated Email Performance: Automated emails generate 320% more revenue than non-automated emails. mailchimp.com
- Transactional Email Engagement: Transactional emails achieve 8 times more opens and clicks than other types of emails and can generate 6 times more revenue. mailchimp.com
- Lead Nurturing Benefits: Nurtured leads make 47% larger purchases compared to non-nurtured leads. mailchimp.com
- Marketing Automation Usage: 55% of companies are currently using marketing automation in their email strategies. mailchimp.com
- ROI from Email Marketing: Email marketing delivers an average return on investment (ROI) of $36 for every $1 spent. hubspot.com
- Targeted Campaign Success: 77% of email ROI comes from segmented, targeted, and triggered campaigns. mailchimp.com
- Budget Increases: 87% of marketers plan to invest more in their email marketing budgets. mailchimp.com
- Conversion Rates: Email marketing is one of the most effective channels for driving conversions, with a 2.8% conversion rate for B2C brands and a 2.4% conversion rate for B2Bs. hubspot.com
- Best Day for Open Rates: Monday has the highest email open rates at 22.0%. mailchimp.com
- Best Day for Click-Through Rates: Tuesday achieves the highest click-through rates at 2.4%. mailchimp.com
- Bounce Rates: The average bounce rate for marketing emails across all industries is 10.31%. constantcontact.com
- Unsubscribe Rates: The average unsubscribe rate for marketing emails is 0.1%. sixthcitymarketing.com
- Mobile-Friendly Emails: Emails optimized for mobile devices are 15% more likely to be read. mailchimp.com
- Email List Growth: On average, email lists degrade by about 22.5% each year, highlighting the need for continuous list building. mailchimp.com
- Abandoned Cart Emails: Customers receiving automated abandoned shopping cart emails are 2.4 times more likely to complete their purchase. mailchimp.com
- Email Marketing Adoption: 64% of small businesses utilize email marketing to reach customers. hubspot.com
Email marketing isn’t going anywhere, no matter how many times we swear we’ll “unsubscribe” from that one newsletter we accidentally signed up for in 2017. It just keeps evolving, morphing into a more targeted, data-driven machine—one that knows exactly when to email you, what subject line will make you click, and how to convince you that you do need that limited-time-only deal on noise-canceling earbuds. With automation, segmentation, and personalization leading the charge, businesses that actually take the time to fine-tune their email strategies are reaping the rewards—77% of email marketing ROI now comes from campaigns that make customers feel just specific enough to matter.
And since we live in a world where people check their email while brushing their teeth, walking their dogs, or pretending to listen in meetings, mobile optimization is non-negotiable—nearly half of all email opens now happen on phones. Meanwhile, marketers looking to keep their lists from decaying into a sad, unresponsive graveyard should focus on re-engagement campaigns, strategic timing, and general list hygiene (which, disappointingly, does not involve scrubbing anything clean). If you must know, Mondays see the highest open rates (22%), while Tuesdays deliver the best click-through rates (2.4%), proving once again that people are most susceptible to marketing at the precise moment they’d rather be doing anything else.
As businesses continue pouring money into email marketing, those that stay ahead of the curve will be the ones that not only get their emails opened but actually get people to act on them. Because in the end, success isn’t just about avoiding the spam folder—it’s about mastering the delicate art of making an email feel like something other than just another piece of digital junk mail waiting to be ignored.
Written by: Tony Zayas, Chief Revenue Officer
In my role as Chief Revenue Officer at Insivia, I am at the forefront of driving transformation and results for SaaS and technology companies. I lead strategic marketing and business development initiatives, helping businesses overcome plateaus and achieve significant growth. My journey has led me to collaborate with leading businesses and apply my knowledge to revolutionize industries.