53 Email Marketing Statistics for 2026
Key data on email marketing ROI, open rates, click-through rates, deliverability, personalization, and automation benchmarks across industries.
Sources include: Empire325 proprietary research, Gartner, McKinsey, HubSpot, Forrester, and industry-specific research firms. Empire325 original statistics are released CC BY 4.0 — free to cite with attribution.
Email marketing ROI averages $42 for every $1 spent — making it the highest-ROI digital marketing channel.
Source: Litmus State of Email Report · 2024
There are 4.48 billion email users worldwide in 2024 — projected to reach 4.8 billion by 2027.
Source: Statista Email Statistics Report · 2024
The average email open rate across all industries is 21.5% — but B2B financial services content achieves 24-28% open rates due to high subscriber intent.
Source: Mailchimp Email Marketing Benchmarks · 2024
Segmented email campaigns achieve 14% higher open rates and 101% higher click rates than non-segmented campaigns.
Source: Mailchimp Segmentation Research · 2024
Personalized subject lines increase email open rates by 26% on average.
Source: Campaign Monitor Email Benchmark Report · 2024
Mobile opens account for 41% of all email opens — making mobile-optimized email design a non-negotiable requirement.
Source: Litmus Email Analytics Report · 2024
Welcome emails generate 4× the open rate and 5× the click-through rate of standard marketing emails — making onboarding sequences the most impactful email type.
Source: Experian Email Study · 2024
Automated email sequences (drip campaigns, behavioral triggers) generate 320% more revenue than non-automated emails.
Source: Campaign Monitor Automation Research · 2024
Email lists decay at approximately 22% per year through unsubscribes, bounces, and inactive addresses — requiring active list maintenance and re-engagement programs.
Source: HubSpot Email Marketing Research · 2024
Plain-text emails outperform HTML emails for reply rates in B2B contexts by 37% — reflecting that professional recipients respond more to conversational messages than designed newsletters.
Source: Empire325 Research · 2025
Methodology & Citations
Statistics on this page are drawn from Empire325 proprietary research (published in our State of AI Search 2026 and Marketing Benchmark reports), and from third-party research cited with source and year. Empire325 proprietary statistics reflect analysis of client engagements, website audits, and controlled program measurement. Third-party statistics are cited as reported by their original sources. All statistics reflect the year indicated and should be verified against original sources for publication in academic or regulated contexts. Empire325 original data is released under Creative Commons Attribution 4.0 International (CC BY 4.0) — free to reproduce with attribution.
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