44 Email Database Marketing Statistics (2026)
Essential 2026 statistics on email list quality, database size, subscriber engagement, segmentation impact, and deliverability benchmarks to optimize your email marketing strategy.
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要点
- 4.73 billion people worldwide will use email in 2026, representing more than half the global population
- 23% of any email list decays within just 12 months, according to ZeroBounce's analysis of 11 billion+ email addresses verified in 2025
- 760% increase in email revenue reported by marketers using advanced segmentation strategies
- 23% of an email list decays within a single year, according to ZeroBounce's 2026 Email List Decay Report
- 83.63% average open rate: welcome emails outperform every other email type in your database
Email Database Scale and Reach
Email databases continue to grow globally, reaching unprecedented scale in 2026. Understanding the size and reach of email as a channel shows why database quality matters more than ever. With billions of active users and hundreds of billions of emails sent daily, your database strategy determines whether your messages stand out or get lost.
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4.73 billion people worldwide will use email in 2026, representing more than half the global population
Email's global user base adds approximately 100 million new users every year, growing from 4.59 billion in 2025 to a projected 4.73 billion in 2026 and 4.85 billion by 2027. No social media platform comes close to this scale, making email the single largest owned-audience channel available to marketers.
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392.5 billion emails will be sent and received every single day in 2026, up from 376.4 billion in 2025
Global daily email volume has maintained a compound annual growth rate of approximately 4% since 2018, climbing from 281.1 billion messages per day to nearly 393 billion. This relentless volume growth means inbox competition intensifies each year, making database quality and list segmentation more critical than ever.
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8.3 billion email accounts exist worldwide, averaging 1.86 accounts per user
Because the average person maintains nearly two email addresses, the total number of email accounts far exceeds the number of individual users. For database marketers, this means subscribers may engage with your campaigns from multiple inboxes, underscoring the need for careful deduplication and identity resolution within your list.
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75.1% of all internet users worldwide actively use email services every month as of Q2 2025
According to Statista data sourced from Meltwater, DataReportal, and We Are Social, three out of four internet users globally are active email users on a monthly basis. In high-adoption markets like Nigeria and South Africa, that reach climbs even higher, to 98.1% and 96.8% respectively, signaling massive untapped database growth potential in emerging regions.
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Global email marketing revenue is projected to reach $12.84 billion in 2025 and grow to $22.93 billion by 2031 at a 10.82% CAGR
The email marketing industry is in a sustained expansion cycle, fueled by automation adoption, AI-powered personalization, and the growing e-commerce sector. SMEs alone account for 57.94% of that market in 2025, confirming that database-driven email marketing is not exclusively an enterprise strategy.
List Quality and Database Hygiene
A clean, verified email database is the foundation of successful campaigns. Poor list quality directly undermines deliverability, engagement metrics, and ROI. This section covers bounce rates, verification standards, data accuracy benchmarks, and the impact of list cleaning on sender reputation and campaign performance.
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23% of any email list decays within just 12 months, according to ZeroBounce's analysis of 11 billion+ email addresses verified in 2025
ZeroBounce's 2026 Email List Decay Report, published February 2026, found that at least 1 in 4 email addresses in a company's database becomes invalid or risky within a year. While this is an improvement from 28% decay in 2024, it means that roughly a quarter of every email database goes stale annually, directly driving up bounce rates and damaging sender reputation for businesses that neglect list hygiene.
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More than 2.6 billion email addresses were identified as invalid in 2025, with over 1 billion catch-all addresses also flagged as deliverability risks
ZeroBounce's processing of 11 billion email addresses throughout 2025 revealed the sheer scale of dirty data in email databases globally. Catch-all addresses are particularly deceptive because they appear valid during verification but still bounce and harm sender reputation when deployed in campaigns, making them a hidden threat to database quality.
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37.3% of business email contacts change within one year, making B2B email databases among the fastest-decaying marketing assets
According to data cited by Landbase (January 2026), more than one third of all B2B email addresses become invalid within 12 months due to job transitions, company domain changes, and security policy updates. At the contact level, B2B data decays at approximately 2.1% per month, meaning a list that was 98% valid in January can drop to 86% validity by July without active maintenance.
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28% of email senders do not use any method to validate email addresses, leaving their databases entirely unchecked
Sinch Mailgun's State of Email Deliverability research found that just 30% of senders conduct email validation at signup and only 13% use bulk validation, while 28% use nothing at all. Nearly 40% of senders also rarely or never conduct list hygiene, putting their deliverability, sender reputation, and campaign ROI at serious ongoing risk.
Segmentation and Database Targeting
Segmented databases outperform bulk lists dramatically. Data shows that marketers using segmentation strategies achieve significantly higher open rates, click rates, and revenue per subscriber. This section reveals how database segmentation, personalization, and targeting strategies drive measurable results across all industries.
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760% increase in email revenue reported by marketers using advanced segmentation strategies
Marketers who advance beyond basic demographic splits and apply behavioral and lifecycle segmentation report up to a 760% increase in revenue per campaign. This figure underscores why database segmentation is one of the highest-ROI investments in any email marketing program.
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Segmented email campaigns generate 14.31% higher open rates and 100.95% higher click-through rates than non-segmented campaigns
Mailchimp's benchmark data, drawn from thousands of campaigns, confirms that targeted list segmentation dramatically outperforms batch-and-blast sends on both open and click metrics. A doubling of click-through rates directly translates to more site visits, more conversions, and more revenue per send.
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65% of marketers say their segmented emails produce better open rates, according to a HubSpot survey
HubSpot's email marketing survey found that nearly two-thirds of marketers directly attribute improved open rate performance to list segmentation. This widespread practitioner consensus makes segmentation one of the most consistently validated tactics in email database marketing.
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78% of marketers say segmenting their email lists into targeted groups is the most effective way to improve campaign performance
Nearly 4 in 5 marketers identify list segmentation as their number-one campaign optimization tactic, ahead of personalization (50%) and triggered emails (45%). This makes subscriber segmentation the single most widely cited strategy for improving email database marketing results.
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Personalized emails generate 6x higher transaction rates compared to non-personalized versions
When email database targeting is combined with true personalization, transaction rates increase sixfold over generic campaigns. With 88% of users also reporting they are more likely to respond favorably to an email that appears created specifically for them, personalization powered by segmentation data is a direct revenue driver.
Database Growth and List Management
Growing your email database with quality subscribers is an ongoing challenge. Unsubscribe rates, list decay, and acquisition costs all affect the long-term health of your database. Understanding these metrics helps you maintain sustainable growth while preserving engagement and sender reputation.
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23% of an email list decays within a single year, according to ZeroBounce's 2026 Email List Decay Report
Email list decay reached 23% in 2025, driven by job changes, abandoned addresses, and disengagement. This means nearly one in four contacts on your database becomes invalid or unengageable within 12 months, making ongoing list hygiene a non-negotiable practice for maintaining deliverability and sender reputation.
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More than 2.6 billion invalid email addresses were detected in ZeroBounce's 2025 dataset
ZeroBounce's analysis found that 23% of all emails checked were invalid, with over 2.6 billion invalid addresses flagged in a single year. Invalid emails cause hard bounces that directly damage sender reputation and reduce inbox placement rates across your entire database.
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The average email unsubscribe rate nearly tripled in 2025 to 0.22%, up from 0.08% in 2024
MailerLite's benchmark report, based on data from over 3.6 million campaigns, recorded the median unsubscribe rate jumping from 0.08% in 2024 to 0.22% in 2025. The primary driver was Gmail's Subscription Center rollout, which made it far easier for users to unsubscribe without opening an email, accelerating list churn across all senders.
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Some senders experienced unsubscribe volume spikes nearly twice their average numbers after Gmail's June 2025 Subscription Center rollout
Salesforce Marketing Cloud data showed certain high-volume senders saw unsub rates double following Gmail's phased introduction of its Subscription Center feature, which lets users unsubscribe from senders with just two clicks without ever opening a message. This development makes proactive list engagement and preference management more critical than ever.
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Only 40% of email senders use double opt-in to confirm new subscribers, while 47.6% do not
Mailjet's Road to Inbox 2025 report found that fewer than half of senders require new subscribers to confirm their opt-in, leaving the majority of databases more vulnerable to fake addresses, bots, and low-quality contacts. Double opt-in is strongly recommended by deliverability experts to protect sender reputation and build a more engaged list from the start.
Engagement Metrics by Database Type
Different types of emails perform differently within your database. Welcome emails, automated flows, and regular campaigns each have distinct engagement benchmarks. Knowing which database segments and email types drive the highest engagement and revenue helps you allocate resources effectively.
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83.63% average open rate: welcome emails outperform every other email type in your database
According to GetResponse benchmarks, welcome emails achieve an average open rate of 83.63% and a click-through rate of 16.60%, making them the single highest-performing segment in any email database. Prioritizing a strong welcome sequence is the fastest way to maximize engagement from newly acquired contacts.
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Automated emails make up just 2% of email volume but drove 37% of all email-generated sales in 2024
Omnisend's 2026 email marketing data confirms that automated flows, despite their tiny share of total sends, are responsible for more than one-third of all revenue generated from email. This disproportionate return makes automation the most capital-efficient segment type in any email database strategy.
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Triggered emails achieve a 5.02% CTR versus 3.84% for newsletters, a 31% performance gap
GetResponse's 2024 benchmark report shows that triggered emails consistently outperform standard newsletter sends on click-through rate. The gap reflects the power of behavioral context: triggered emails arrive at exactly the moment a subscriber has taken a relevant action, driving far higher intent to click.
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Abandoned cart emails convert at 3.33% with a 50.5% open rate, and top brands reach 7.69% conversion
Klaviyo data shows that cart abandonment emails are among the most commercially powerful segment type in e-commerce databases, combining a high open rate with a meaningful conversion rate. Top-performing brands nearly double the average conversion rate, underscoring the impact of copy, timing, and offer quality within this database segment.
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Transactional emails generate 8x more opens and clicks than regular marketing emails
Research from Experian (2024) confirms that transactional emails, such as order confirmations, shipping notifications, and receipts, dramatically outperform promotional campaign emails on every engagement metric. Marketers who embed offers or cross-sells into transactional sends can leverage this high-intent segment for incremental revenue.
ROI and Revenue Impact
Email database marketing delivers exceptional ROI compared to other channels. The revenue generated from a well-maintained, strategically deployed database far exceeds the cost of maintenance and sending. This section breaks down the financial case for investing in database quality and advanced segmentation strategies.
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$36 to $42 returned for every $1 spent on email marketing, outperforming paid ads, social, and SEO
Email database marketing consistently delivers the highest ROI of any digital channel. This benchmark, reported by Litmus, reflects average returns across industries, meaning a well-maintained database with strong list hygiene is the foundation of that return. Brands that invest in database quality routinely sit at the upper end of that range.
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Retail and e-commerce email databases generate up to $45 ROI per $1 spent, the highest of any industry vertical
While the cross-industry average ROI sits at $36 to $40, retail, e-commerce, and consumer goods businesses earn the most from their email databases at $45 per dollar spent. This makes a clean, segmented, and well-deployed retail email list one of the highest-returning marketing assets a business can own.
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Automated emails drove 37% of all email-generated sales in 2024 while making up only 2% of total email volume
According to Omnisend's 2025 Ecommerce Marketing Report, which analyzed 24 billion emails sent in 2024, automation is the single most disproportionately powerful revenue lever in email database marketing. One in three people who clicked an automated message made a purchase, compared to just one in 18 for scheduled campaign sends.
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Marketers using segmented email database campaigns have reported up to a 760% increase in revenue
Campaign Monitor's own research, corroborated by DMA data, found that segmenting a database and targeting those segments with relevant messaging can increase revenue by up to 760% compared to non-segmented sends. Separately, DMA data confirms that segmented and targeted emails generate 58% of all email revenue, underscoring that database structure directly drives financial outcomes.
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In 2025, behavior-based automated emails generated 25% of total email revenue from just 1.7% of sends
Omnisend's 2026 Ecommerce Marketing Report, analyzing data from over 150,000 brands across 27 billion emails, found that behavior-triggered database campaigns (such as abandoned cart and browse abandonment) produced outsized revenue from a tiny fraction of send volume. This confirms that database behavioral data is the most valuable asset for revenue generation, not raw list size.
来源
All statistics on this page are sourced from the following 41 references.
- 1Clean Email Industry Data Report 2025-2026 (January 2026)
- 2EmailTooltester How Many Emails Are Sent Per Day (January 2026)
- 3EmailTooltester Email Usage Statistics 2026 (Updated 2025)
- 4Statista via Meltwater, DataReportal and We Are Social (October 2025)
- 5Mordor Intelligence Email Marketing Market Report (January 2026)
