Email Marketing Statistics 2026: ROI, Open Rates and Benchmarks by Industry

Email marketing statistics for 2026 confirm what marketers have said for years: email still returns more per dollar than any other channel. The average return sits between $36 and $42 for every $1 spent, and retail and ecommerce brands often see closer to $45. Around 4.6 billion people worldwide use email, a number that keeps climbing even as social platforms compete for attention.

This page pulls together the numbers that matter for planning an email program in 2026: revenue and ROI, open and click benchmarks by industry, automation performance, and where the channel is headed next.

Email Marketing Statistics: ROI and Revenue in 2026

Email marketing ROI is usually reported one of two ways: as a single point estimate, or as a range self-reported by marketing teams. Both show the same pattern. Email consistently outperforms paid search, paid social, and display.

Metric	Figure	Source
Average ROI, all industries	$36 to $42 per $1 spent	Litmus, Omnisend, industry aggregates
Retail and ecommerce ROI	$45 per $1 spent	Industry benchmark studies
Paid search ROI, for comparison	$2 per $1 spent	Industry benchmark studies
Marketing teams reporting 36:1 to 45:1 ROI	Self-reported band	Litmus State of Email 2026

Source: Litmus, State of Email 2026 report, self-reported survey of marketing leaders, United States and global.

Litmus asks marketers to self-report their ROI in bands rather than a single number, which is why its data looks different from platform-specific figures. Its 2026 survey found teams reporting returns anywhere from 1:1 up past 45:1, with a meaningful share landing between 20:1 and 45:1. Litmus also found that advanced AI adopters were 75% more likely to land above 45:1, which lines up with the wider trend of AI-assisted personalization pushing returns higher.

Platform-reported figures tend to run higher than the industry average. Omnisend reported that its merchants on paid plans averaged $76 to $79 per $1 spent in 2025, well above the general benchmark. Read platform-specific numbers with some caution, since they reflect only that platform’s customer base, not the market as a whole.

How Many People Use Email

Email is not shrinking. Around 4.6 billion people worldwide used email in 2025, and that figure is projected to climb toward 4.8 billion by 2028, according to Radicati Group data published through Statista. That is more than half the global population.

Volume is climbing alongside the user count. Global daily email traffic is estimated in the range of 376 to 392 billion messages a year over year, and the growth rate has held at roughly 3% to 4% annually for several years running. For marketers, this means the inbox is more crowded than ever, which raises the bar for subject lines, timing, and relevance.

Email Open and Click Rates by Industry

Benchmark reports disagree on exact numbers because each provider measures a different pool of senders. Two of the most cited sources, Mailchimp and Klaviyo, land in different places.

Provider	Sample	Open rate	Click rate
Mailchimp	All-user historical benchmark	35.63%	2.62%
Klaviyo	183,000 ecommerce brands, published Feb 2026	31%	1.69%
MailerLite	3.6 million campaigns, 2026 report	30.1% to 55.71% by industry	2.09% average

Source: Mailchimp Email Marketing Benchmarks; Klaviyo 2026 Email Marketing Benchmarks by Industry; MailerLite Email Marketing Benchmarks 2026.

MailerLite’s industry breakdown shows the widest spread. Religion, hobby, and non-profit senders post the highest open rates, all above 52%, while travel and ecommerce sit near the bottom at 30% to 33%. This pattern holds across most benchmark reports: subscribers who signed up out of personal interest open more than subscribers who signed up for a discount code.

One caveat applies across every open rate figure here. Apple’s Mail Privacy Protection preloads tracking pixels for a share of Apple Mail users, which inflates reported opens regardless of whether a human actually read the message. Click rate and revenue per email are more reliable signals of real engagement than open rate alone.

Automation and Segmentation Performance

Automated emails punch far above their weight. Klaviyo’s 2026 benchmark data found that automated flows generate about 41% of total email revenue while accounting for only around 5% of total sends. Flow click rates also run higher than campaign click rates, at 5.58% versus 1.69%.

This gap exists because automated flows, such as welcome series, cart abandonment, and post-purchase follow-ups, reach people at a moment of clear intent. Automation tools, according to research from Wikipedia, let marketers schedule and send messages based on specific user actions rather than a fixed calendar, which is part of why these emails convert at a higher rate than one-off campaigns.

The practical takeaway is straightforward. A program built mostly around scheduled newsletters is leaving revenue on the table if it has not built out welcome, abandonment, and post-purchase flows. These automations require setup once and then keep generating a disproportionate share of revenue with little ongoing effort.

Deliverability and Mobile Behavior

Getting an email opened depends on more than subject lines. Deliverability benchmarks from GetResponse’s dataset of 4.4 billion messages found an average bounce rate of 2.33% and a spam complaint rate under 0.01%, figures worth checking against before assuming a drop in opens is a content problem.

Mobile now dominates how people read email. Roughly six in ten email users check their inbox mainly on a mobile device, which affects everything from subject line length to how emails render. A message that looks fine on desktop but breaks on a phone screen loses the reader before the content ever gets read.

Unsubscribe rates offer a useful health check separate from opens and clicks. Benchmark reports generally put a healthy unsubscribe rate at 0.1% to 0.3% per campaign, with anything above 0.5% signaling a mismatch between send frequency and what subscribers actually signed up for.

Email Marketing Trends for 2026

A few patterns show up consistently across 2026 reporting:

AI adoption is now a measurable factor in ROI. Litmus found advanced AI adopters are 75% more likely to hit ROI above 45:1.
Automation keeps outperforming one-off campaigns, both in click rate and in share of total revenue.
Email production cycles are getting faster. Litmus found teams that once took two weeks or more to send a single email now deploy within three days.
Measurement is shifting away from open rate, which Apple’s privacy changes have made less reliable, toward click rate, revenue per email, and multi-touch attribution.

Conclusion

The email marketing statistics for 2026 point to a channel that keeps earning its place in the budget. ROI remains far ahead of paid search and paid social, the user base keeps growing, and automation continues to deliver outsized returns relative to the effort required to set it up.

The gap between top and average performers comes down to a few specific choices: building out automated flows instead of relying only on scheduled sends, tracking click and revenue metrics instead of open rate alone, and applying AI tools to personalization and send timing rather than content alone. Programs that make those choices are the ones showing up in the higher ROI bands in every 2026 benchmark report.

FAQ

How many people use email in 2026?

Around 4.6 billion people worldwide used email as of 2025, a figure projected to grow to roughly 4.8 billion by 2028, according to Radicati Group data published through Statista. That is more than half the global population.

What is the average ROI of email marketing?

Most industry sources place the average return between $36 and $42 for every $1 spent. Retail and ecommerce brands tend to do better, averaging around $45 per $1, while some platform-specific cohorts report even higher returns.

What is a good email open rate in 2026?

A good open rate typically falls between 30% and 40%, though this varies widely by industry, from around 30% for travel and ecommerce senders up to 55% or more for religion and non-profit senders. Apple’s privacy changes have made open rate a less reliable metric than click rate or revenue per email.

Do automated emails perform better than regular campaigns?

Yes. Automated flows generate a disproportionate share of email revenue, around 41% from just 5% of total sends according to Klaviyo’s 2026 benchmark data, and they post higher click rates than one-off campaigns because they reach people at a specific moment of intent.

Is email marketing still worth investing in for 2026?

Yes, based on ROI data. Email consistently outperforms paid search and paid social by a wide margin, and teams using AI for personalization and send-time optimization report even stronger returns than the industry average.