Email is the highest-ROI channel in B2B; returning roughly $36–$42 for every $1 spent (Litmus; DMA UK) and 50% of US B2B marketers name it the single most impactful channel in their multichannel mix (eMarketer/Ascend2); but the "open rate" it was traditionally judged on has been structurally broken by Apple Mail Privacy Protection since 2021, shifting credible measurement to clicks, replies, and pipeline.
Email marketing delivers an average return of $36 for every $1 spent - the figure Litmus reports as higher than any other channel (Source: Litmus, State of Email/ROI, 2024).
In Litmus' 2025 State of Email survey, marketers' returns were distributed as 35% seeing $10–$36 per $1, 30% seeing $36–$50, and 5% seeing more than $50 per $1; only 21% do not measure ROI, down from 36% in 2023 (Source: Litmus, State of Email 2025; survey of nearly 500 marketing professionals worldwide).
Litmus' industry ROI breakdown (from its 2020 survey of 2,000+ marketers) ranges from 32:1 for media/publishing/events, to 36:1 for software & technology, 42:1 for marketing/PR/advertising agencies, and 45:1 for retail/e-commerce/consumer goods (Source: Litmus, 2020).
Brands that use Litmus Email Analytics report a 43% higher ROI than those that don't (Source: Litmus, 2025).
DMA UK's Marketer Email Tracker 2019 put email ROI at just over £42 for every £1 spent, a jump of almost £10 from the prior study; B2B organisations reported just under £36 ROI, versus nearly £48 for B2C (Source: DMA UK, Marketer Email Tracker 2019; online survey of 197 UK marketers, January 2019).
(2020): DMA-reported ROI eased to £35.41 per £1 in the 2020 tracker, described as a decline from the prior year's spike but with a positive long-term trend (Source: DMA UK, Marketer Email Tracker 2020).
(2021): DMA's 2021 tracker recorded ROI of £38.33 per £1, up steadily from £29.64 in 2016; the average share of marketing budget spent on email passed 20% for the first time (21.3%), with 45% of businesses spending over a fifth of their marketing budget on email (Source: DMA UK, Marketer Email Tracker 2021).
(2020, by company size): DMA data showed large businesses saw higher returns (~£44.08) than small/micro companies (~£30.61) per £1 spent (Source: DMA UK, 2020).
63% of organisations achieving high email ROI spend more than 20% of their marketing budget on email, while most low-ROI organisations spend under 20%, establishing a clear correlation between investment and return (Source: DMA UK, 2019).
For 38% of marketers, measuring ROI is the most effective way to evaluate email program performance, the top-ranked KPI ahead of conversion rate, CTR, and click-to-open rate (Source: Ascend2, Email Marketing: Strategies, Tactics & Trends, 2022; 404 marketers surveyed July 17–25, 2022).
52% of marketing professionals reported that email marketing doubled their ROI year over year (Source: Statista).
In B2B, email contributes roughly 1.3% of total marketing-qualified leads but 2.24% of revenue, with those leads converting ~11.3% faster than the blended average and moving through the sales cycle ~7% quicker than inbound leads overall (Source: Sopro, 2025).
Across 4.4 billion messages sent in 2023 by active senders (500+ contacts), the all-industry averages were: open rate 39.64%, click-through rate 3.25%, click-to-open rate 8.62%, unsubscribe rate 0.15%, bounce rate 2.33%, and spam-complaint rate below 0.01% (Source: GetResponse, Email Marketing Benchmarks 2024; 6th annual edition).
Among GetResponse's B2B-leaning verticals, Legal Services led with a 47.26% open rate and 12.11% CTR, and Technology & High Tech reached 44.72% opens and 7.40% CTR, both well above the all-industry average; Financial Services posted 34.70% opens and 5.34% CTR (Source: GetResponse, 2024; 2023 data).
Automated/triggered emails outperformed newsletters, 45.38% open and 5.02% CTR for triggered emails vs 40.08% open and 3.84% CTR for newsletters; welcome emails averaged an 83.63% open rate (Source: GetResponse, 2024).
B2B emails average a 3.18% click rate versus 2.09% for B2C, per DMA benchmarking data, "B2B emails outperformed B2C emails regarding click rates, with a rate of approximately 3.18%, compared to 2.09% for B2C emails", reflecting the higher intent of business recipients (Source: SearchLab).
Year-over-year opens: B2B/aggregate open rates tracked by Sopro rose from 18.7% (2016), 19.6% (2019), 19.0% (2020), 19.0% (2021), to 31.8% (2022), 33.5% (2023) and 35.9% (2024), the 2022 jump reflecting Apple MPP auto-opens, not true engagement (Source: Sopro, 43 B2B Email Marketing Statistics, 2025).
Click-to-open rate fell from 10.3% (2016) to 6.4% (2024), while unique click rate held remarkably stable around 2% for nearly a decade, evidence that headline open-rate gains are illusory while genuine engagement has softened (Source: Sopro, 2025).
In Sopro's analysis of ~100,000 highly targeted B2B prospecting emails, the average open rate was 42% and the average lead rate 3.71%; business owners opened 54% of prospecting mails, nearly 20% more than CXOs, yet open rate showed no reliable correlation with lead rate (Source: Sopro, email open and lead rate correlation study).
The average time spent reading an email fell from 13.4 seconds (2018) to 8.97 seconds (2022), a ~33% decline in four years, underscoring the need for front-loaded, concise B2B copy (Source: Sopro, 2025).
Roughly 1 in 6 legitimate marketing emails fails to reach the inbox, keeping global inbox placement around 84–85%, a decline from Validity's prior report (Source: Validity, 2025 Email Deliverability Benchmark Report; 2024 data).
Gmail's inbox placement declined from 89.8% in early 2024 to 87.2% by Q4 2024 following the enforcement of its new bulk-sender rules (Source: Validity, 2025 Benchmark Report).
Since February 2024, Google and Yahoo require SPF, DKIM, and DMARC for anyone sending more than 5,000 messages per day, with a spam-complaint threshold of 0.3% (best practice below 0.1%) (Source: Sinch Mailgun, State of Email Deliverability 2025; 1,000+ senders surveyed).
GlockApps found average inbox placement for senders mailing 1M+ messages/month collapsed from 49.98% (Q1 2024) to 27.63% (Q1 2025), a 22.35-point drop, while Microsoft tightened hardest (Office365 −26.73%, Outlook −22.56%, Google Workspace −10.49%) (Source: GlockApps, Updated Email Deliverability Statistics 2025).
Sopro's 2026 survey found 67% of B2B teams agree that deliverability is a major barrier to prospecting success (Source: Sopro, State of Prospecting 2026; 442 senior decision-makers, 126 million emails analyzed).
81% of B2B marketers incorporate email into their marketing strategy, and 73% of B2B buyers name email their preferred way to be contacted, ahead of phone (39%), events (31%), and ads (25%) (Source: Sopro, State of Prospecting 2025).
50% of US B2B marketers say email marketing is the channel with the biggest impact on their multichannel strategy, outpacing social media (33%) and content marketing (26%) (Source: eMarketer, citing Ascend2 & ZoomInfo; April 2023 survey of 101 US B2B marketers).
Among B2B marketers, email marketing ranked as the most effective channel for generating qualified leads (33% share), now outperforming in-person tradeshows and events (28%) (Source: Backlinko compilation of eMarketer/CMI data, 2026).
71% of B2B marketers use email newsletters as part of their content strategy, one of the most-used content distribution channels (Source: Content Marketing Institute, B2B Content Marketing Benchmarks 2025; survey fielded June–Aug 2024, 1,186 global responses).
In the most recent CMI B2B research, email (44%) and email newsletters (39%) ranked among the top distribution channels, with in-person events (52%) and webinars (51%) rated most effective (Source: Content Marketing Institute, 2025).
81% of B2B companies run outbound lead-generation programs, and 70% call prospecting integral to success (Source: Sopro, State of Prospecting 2025).
In Sopro's 2026 data, email is the top lead-generation channel (78%), ahead of referrals (56%) and paid social (51%); 84% of purchase decisions now involve more than one person, averaging 4.05 decision-makers (18% report six or more) (Source: Sopro, State of Prospecting 2026; 442 decision-makers, 126M emails, 25M+ touchpoints).
59% of B2B marketers say email marketing generates the most revenue of any channel, a figure attributed to HubSpot and recirculated across industry roundups (Source: HubSpot).
The average email conversion rate across six B2B industries (including B2B tech and B2B e-commerce) is 2.53% (Source: Ruler Analytics, 2023).
88% of marketing influencers agree that email marketing effectiveness is increasing, with 40% describing the increase as significant (Source: Ascend2, Email Marketing Strategy research).
By the time B2B buyers engage sellers, they are typically 70% through their journey, and 81% already have a preferred vendor; 89% now use generative AI somewhere in the purchasing process (Source: Sopro, Sopro State of Prospecting 2026).
Marketers who use segmented campaigns note as much as a 760% increase in revenue (Source: DMA).
Only about one-third of email marketers fully leverage personalization, despite it offering an estimated 10–15% revenue increase (Source: Sopro, 2025).
The best-rated B2B email strategies are segmentation (78%), message personalization (72%), and automation (71%) (Source: Hubspot).
96% of Ascend2's AI-using marketers report AI has had a positive impact on overall email performance, with 42% describing it as extremely positive (Source: Ascend2, Email Marketing & AI 2023; 378 marketers surveyed July 2023).
In Backlinko's analysis of 12 million outreach emails, messages with long subject lines had a 24.6% higher response rate than short ones, and personalized subject lines lifted response rate by 30.5% (Source: Backlinko, We Analyzed 12 Million Outreach Emails, 2019).
64% of B2B buyers decide whether to open an email based on the subject line alone (Source: Sopro, State of Prospecting 2025).
GetResponse data indicates a subject-line "sweet spot" of approximately 20–60 characters for opens and clicks, and that emojis, on average, slightly decrease both open and click rates (Source: GetResponse, 2024).
Almost half of all email opens occur on mobile devices, versus roughly 27.5% via webmail and 21.2% on desktop; 42.3% of users delete emails that are not mobile-optimized (Source: Sopro, 2025).
Apple Mail (including Mail Privacy Protection) plus Gmail account for nearly 90% of email client market share, with MPP affecting roughly 55–60% of all opens (Source: Litmus, Email Client Market Share, 2026).
Desktop readers engage more deeply per open. Litmus engagement data shows mobile click-to-open around 11% vs roughly 21% on desktop, so mobile owns the open but desktop owns the click, a critical nuance for B2B where recipients often move to desktop to complete complex decisions (Source: Litmus, 2026).
Only 8.5% of outreach emails receive any response: "91.5% of the messages we analyzed didn't get a reply" (Source: Tabular, 578 Email Marketing Stats You Can Use in 2026).
Emailing multiple contacts at the same organization increases response rates by 93% versus single-contact outreach, and personalizing the email body lifts response rate by 32.7% (Source: Backlinko, 2019).
Sopro's State of Prospecting 2025 found email-only campaigns generating almost 30% fewer leads year-on-year, and 75% of B2B companies say results improve when email is combined with other outbound channels (Source: Sopro, State of Prospecting 2025).
Belkins' analysis of 16.5 million cold emails found the single highest reply rate (8.4%) came from just one email, and sequences of four or more emails more than tripled unsubscribe and spam-complaint rates, challenging the "more follow-ups always win" assumption (Source: Belkins, Sales Follow-Up Statistics in B2B, 2025).
Email marketing databases naturally decay by about 22.5% per year (roughly 2.1% per month) as contacts change jobs and addresses, a rate that runs higher for B2B lists, where job changes are the primary driver (Source: HubSpot, citing MarketingSherpa).
In Litmus' 2025 State of Email, 49% of marketers use generative AI for static email copy and 41% for dynamic/real-time personalization; nearly 70% expect up to half of email operations to be AI-driven by the end of 2026 (Source: Litmus, State of Email 2025).
36% of B2B organizations now use AI-powered email marketing tools for campaign optimization and personalized content (Source: Content Marketing Institute).
Nearly 3 in 4 marketers use some kind of AI tool at work, and content creation remains the top AI use case for the second year running (Source: HubSpot).
63% of marketers now use AI in their email marketing (Source: MTC Martechcube, 2025 research, the primary source behind the widely recirculated 63% figure).
Email newsletters are among the top B2B content distribution channels, used by 71% of B2B marketers, and are valued because subscribers are typically loyal and closer to purchase (Source: Content Marketing Institute, 2025).
HubSpot reports email is tied for second as the channel providing the highest ROI; one in three marketers uses email and 87% plan to maintain or increase investment (Source: HubSpot, State of Marketing 2024; 1,400+ global marketers).
Stage 1: Fix measurement (do this first). Lead with click, click-to-open, reply, and pipeline metrics in all 2024+ reporting; treat open rate as a deliverability signal only. Benchmark B2B against ~3% CTR (GetResponse), click-to-open above 10%, and unsubscribe below 0.15%. Trigger to distrust a vendor/report: if open rate is still presented as the headline engagement KPI.
Stage 2: Secure deliverability before scaling volume. Implement SPF/DKIM/DMARC (mandatory for 5,000+/day senders since Feb 2024), keep spam complaints under 0.1%, and target 85%+ inbox placement. Trigger to pause and remediate: any sustained inbox-placement drop below 85% across providers, or bounce rate above the ~2.3% GetResponse benchmark.
Stage 3: Rebalance the mix toward automation and multi-channel. Triggered/automated flows materially out-earn newsletters (GetResponse), and email-only outbound is losing ~30% of leads year-over-year; pair email with LinkedIn and retargeting. Benchmark to hit: triggered-email CTR of 5%+ before scaling batch sends.
Stage 4: Institutionalize list hygiene. Re-verify and re-engage quarterly to counter 22.5% annual decay; a smaller engaged list beats a larger stale one for both ROI and inbox placement.
Stage 5: Adopt AI with human oversight now. Nearly half of marketers already use AI for copy; the 2026 differentiator is execution quality, not access. Start with subject lines, personalization, and send-time optimization, keeping a human editor in the loop for brand voice.