Email Deliverability Benchmarks 2026: Inbox Placement Data
Validity's 2025 seed tests averaged 87.2% inbox placement, but only 77.4% at Microsoft. Inbox, spam, complaint, and bounce benchmarks by provider, region, industry, and B2B.
Andrew Kim
About one email in eight missed the inbox in Validity's 2025 seed tests. The 2026 Email Deliverability Benchmark Report puts average inbox placement at 87.2%, with 6.1% in spam and 6.6% missing. The average hides a 12.4-point gap: Gmail placed 89.8%, Microsoft 77.4%.
Validity doesn't disclose its sample size, so read 87.2% as context, not a universal average. This page is the data; the fixes are in our email deliverability guide.
Last validated: October 2026. Every figure includes its measurement window. We update this page when a source publishes newer data.
Delivered doesn't mean it hit the inbox
Most benchmark arguments are two people using "deliverability" for different numbers.
“Delivered” stops before the decision you care about
| Stage | Meaning |
|---|---|
| Sent | Sender submitted the message |
| Accepted | Receiving server accepted the message |
| Missing | Message wasn't observed in inbox or spam; Validity classifies this as deferred or blocked mail |
| Placed | Accepted message reached the inbox or spam folder |
| Used | Recipient completed the intended job |
"Delivered" is just sent minus bounced. A 1.5% bounce rate shows as 98.5% delivered, a number that's silent about the spam folder.
Open rates won't settle it either: Apple's Mail Privacy Protection loads remote content even for unread email, so some "opens" are just Apple's servers.
Which benchmark sources can you trust?
| Source | Window | Result | Method | Use it for |
|---|---|---|---|---|
| Validity | Calendar 2025 | 87.2% inbox | Opt-in customer seed tests at hundreds of mailbox providers and filters; sample size undisclosed | Market context and provider gaps |
| EmailTooltester | January 2024 | 83.1% placed | 15 marketing platforms, five tests; method: shared IPs, about 80 seeds, Promotions tab counted as placed | Historical reference only |
| Your production data | Last 30 or 90 days | Your number | Your domains, recipients, and message types | Finding problems and proving fixes |
EmailTooltester's January 2024 round was its last. In 2025 it stopped publishing inbox-placement rankings because seed-list results had become "increasingly inconsistent" with real-world performance. Don't average 83.1% with Validity's 87.2%: different populations, different methods.
No platform leaderboard guarantees your result. Your domain reputation, authentication, list hygiene, content, and audience's mailbox mix also shape where your email lands.
Inbox placement by mailbox provider
Apple and Microsoft fall short, mostly in the spam folder.
Microsoft sent 15.1% of mail to spam. Gmail sent 6.4%.
- Inbox
- Spam
- Missing
| Provider | Inbox rate | Spam rate | Missing rate | Share of mailboxes |
|---|---|---|---|---|
| Gmail | 89.8% | 6.4% | 3.8% | 42.9% |
| Yahoo | 87.3% | 6.4% | 6.3% | 15.7% |
| Apple | 82.0% | 10.8% | 7.2% | 3.6% |
| Microsoft | 77.4% | 15.1% | 7.5% | 14.4% |
Validity says regional providers trail the big four by roughly 10 to 25 points. It credits Microsoft's Q2 2025 gains to new bulk-sender rules that rewarded senders already meeting Gmail and Yahoo's standards. Source: Validity 2026 report, pages 15–20.
Microsoft is about one mailbox in seven in this data. Small enough to hide a junk-folder problem inside a healthy average, big enough to hurt. Split your numbers by provider.
What are normal complaint and bounce rates?
| Metric | 2025 average | The line |
|---|---|---|
| Spam complaints | 0.06% | Gmail: below 0.1%, never 0.3%. Yahoo: below 0.3% |
| Unknown-user bounces | 1.46% | Amazon SES: automatic review at 5% hard bounces or higher |
| Rejected (blocked by the provider) | 3.20% | Watch your own trend |
Source: Validity 2026 report, pages 12–14; Google sender FAQ; Yahoo sender best practices; Amazon SES reputation metrics.
Validity says older guidance tolerated 0.2% to 0.3%, then puts it plainly: "under 0.1 percent is now the expectation." At 0.1%, that's one complaint per 1,000 inboxed emails; Gmail and Yahoo don't count spam-folder mail.
Unknown-user bounces well above 1.46%? Start with our guide to reducing email bounce rate.
Inbox placement by region
Europe led at 91.1%. Asia trailed at 86.4%.
| Region | Inbox | Spam | Missing |
|---|---|---|---|
| Europe | 91.1% | 3.7% | 5.1% |
| South America | 88.0% | 4.1% | 7.8% |
| Oceania | 87.9% | 3.8% | 8.3% |
| North America | 86.7% | 6.8% | 6.5% |
| Asia | 86.4% | 2.4% | 11.2% |
Asia had the most missing mail (11.2%); North America had the most spam (6.8%).
Countries spread wider: Germany 97.5%, India 71.0%, the US 86.8%, Canada 89.4%. Source: Validity 2026 report, pages 22–26. Some rows total 99.9% because of rounding.
Is B2B deliverability harder?
Yes, by 4.2 to 8.2 points below Validity's 87.2% global average:
| B2B receiving system | Inbox | Spam | Missing |
|---|---|---|---|
| Hosting platforms (Office 365, Google Workspace) | 83.0% | 9.6% | 7.4% |
| Corporate filters (Proofpoint, Mimecast, Cisco) | 79.0% | 12.6% | 8.5% |
Validity says most companies use both, so B2B mail faces two sets of checks. Office 365 held 60.3% of the hosting market in this data, so watch Microsoft if you sell to businesses.
Source: Validity 2026 report, pages 27–28. Our B2B email marketing guide covers what to send once it lands.
Inbox placement by industry
Transportation led at 97.2%. Real Estate trailed at 80.1%, with about one email in six landing in spam.
| Industry | Inbox | Spam | Missing |
|---|---|---|---|
| Transportation | 97.2% | 1.1% | 1.8% |
| Energy, Utilities & Waste | 95.0% | 1.8% | 3.1% |
| Telecommunications | 92.6% | 4.7% | 2.7% |
| Retail | 90.4% | 2.7% | 6.9% |
| Finance | 88.8% | 6.5% | 4.6% |
| Media & Internet | 88.1% | 4.3% | 7.7% |
| Software | 85.7% | 7.7% | 6.6% |
| Business Services | 85.1% | 7.7% | 7.2% |
| Consumer Services | 81.2% | 10.9% | 7.9% |
| Healthcare Services | 80.3% | 10.7% | 9.0% |
| Real Estate | 80.1% | 15.9% | 4.1% |
Selling software? The sector sits below the 87.2% global average: 85.7% inbox, 7.7% spam. Source: Validity 2026 report, page 29; selected rows from 21 sectors.
What's a good deliverability rate in 2026?
Complaints have a hard line. Inbox placement doesn't.
| Question | Number | The catch |
|---|---|---|
| How did the market do in 2025? | 87.2% inbox | Validity's participating customers only |
| What did EmailTooltester call good? | Above 89% excellent, 83–88% acceptable | Its own seed-test method, retired in 2025 |
| Is my program healthy? | Your segmented trend | Same domain, message type, provider, and window |
Validity credits the Gmail, Yahoo, and Microsoft bulk-sender rules for part of 2025's gains, so start there. Our deliverability guide has the full requirements and enforcement dates.
How to benchmark your own deliverability
- Fix the denominator. Sent, accepted, or seed messages: pick one and keep it.
- Split the traffic. Authentication (resets, magic links), transactional (receipts, alerts), lifecycle (onboarding, activation), promotional (newsletters, offers), each by mailbox provider. Resets and newsletters shouldn't share an average.
- Tie sends to outcomes. Log delivery events next to the product result: verified accounts, sign-ins, upgrades.
- Keep seed tests boring. Same recipients, domain, message, timing, and IP every round.
- Watch provider signals. Google Postmaster Tools, Yahoo's Sender Hub and Complaint Feedback Loop, and Microsoft SNDS.
- Compare windows, not campaigns. Use a rolling baseline and log every DNS, domain, IP, volume, and template change.
Where Dreamlit fits
Use the benchmarks above to frame your own measurements, rather than as a promise about your next send. Dreamlit, the company behind this blog, lets your AI agent build email workflows from your Supabase or Postgres database, preview them with real data, and send from your domain only after you publish.
Bounces, complaints, and unsubscribes are handled, and opens, clicks, and per-recipient activity are built in. The studies above aren't Dreamlit delivery tests.
Start a 7-day free trial or connect your agent.
References
- Validity: 2026 Email Deliverability Benchmark Report (2025 measurement window)
- EmailTooltester: January 2024 seed-list test
- EmailTooltester: why it stopped seed-list rankings
- EmailTooltester: historical results and methodology
- Google: Email sender guidelines FAQ
- Google: Postmaster Tools dashboards
- Yahoo Sender Hub: Sender best practices
- Amazon SES: Reputation metrics messages
- Apple: Mail Privacy Protection
Frequently asked questions
What is the average email deliverability rate in 2026?
Validity's 2026 report measured 87.2% average inbox placement during 2025, with 6.1% landing in spam and 6.6% missing. It comes from participating customers' seed tests and doesn't disclose a sample size, so treat it as context, not a universal average.
What is a good email deliverability rate?
Name the metric first. A delivered (accepted) rate above 98% can still hide heavy spam-folder placement. For inbox placement, 87.2% was the 2025 average in Validity's data, but the useful target is improvement against your own mailbox mix and message type.
Is delivered email the same as inbox placement?
No. Delivered means the receiving server accepted the message. Inbox placement measures how much sent mail reached the inbox; spam and missing mail are separate outcomes. A dashboard can show 99% delivered while a meaningful share of that mail sits in spam.
What is an average spam complaint rate and bounce rate?
In Validity's 2025 data the average spam complaint rate was 0.06% and the average unknown-user bounce rate was 1.46%. Gmail asks bulk senders to stay below 0.1% complaints and never reach 0.3%; Yahoo requires below 0.3%.
Which mailbox provider is hardest for email deliverability?
Of the four biggest providers, Microsoft. In Validity's 2025 data, Microsoft (Outlook.com and Hotmail) averaged 77.4% inbox placement, compared with 82.0% for Apple, 87.3% for Yahoo, and 89.8% for Gmail. Regional providers did worse: Validity puts them roughly 10 to 25 points behind the big four.
How should I test my own email deliverability?
Split mail by message type and mailbox provider. Use seed tests for folder placement, track bounces and complaints, and watch Google Postmaster Tools, Yahoo Sender Hub, and Microsoft SNDS. Compare several weeks, not one campaign, and don't read an open-rate change as proof of an inbox-placement change.
About the Author
Co-Founder & CTO
Andrew is Co-Founder and CTO of Dreamlit AI, which runs user activation for software companies. He previously built partner integrations at Netflix and led engineering at fintech startup Bonside. Full bio →
Other articles
Email Deliverability Guide 2026: Checklist and Sender Rules
Email deliverability explained: a prioritized checklist, the 2026 Gmail, Yahoo, and Outlook sender rules, and how to fix email that keeps landing in spam.
12 Welcome Email Examples Built for Activation (2026)
12 welcome email examples for SaaS, trials, newsletters, stores, and communities. Each one shows the copy, when to send it, and when to stop.