Statistics
Sourced 2026 data on email overload: how much time email really takes, unsubscribe behavior, inbox stress, and the numbers behind inbox zero.
Email Overload Statistics (2026): How Many Emails Per Day?
Email overload statistics for 2026: 376B+ emails sent daily worldwide, ~126 per business user, and 28% of the workweek lost to email. Sourced, citable roundup.
StatisticsEmail Productivity Statistics: Notifications & Focus
Email productivity statistics on interruptions, notifications, and focus — the 28% workweek, the 23-minute refocus cost, and more, each cited to its source.
StatisticsEmail Stress & Anxiety Statistics (2026)
Email stress statistics (2026): constant checkers report higher stress (APA), checking email 3x/day cuts stress (UBC), plus after-hours email burnout data — all sourced.
StatisticsEmail Unsubscribe Statistics (2026): Subscription Mail, One-Click Rules, and What the Law Requires
Sourced email unsubscribe statistics for 2026: 47% of email traffic is spam, Gmail and Yahoo unsubscribe requirements, CAN-SPAM's 10-business-day rule and maximum penalties — every figure linked to its primary source.
StatisticsInbox Zero Statistics: Does Anyone Actually Hit It?
Inbox zero survey statistics, with dates and samples: YouGov found 22% at zero unread in 2015 and 23% in a 1,000-person 2025 survey.
StatisticsHow Much Time Do We Spend on Email? (2026 Data)
Time spent on email statistics for 2026: ~28% of the workweek (McKinsey), 2.5–5 hours a day (Adobe), plus a ~23-minute refocus cost per interruption.
StatisticsAI Email Statistics 2026: How AI Changed Your Inbox
AI email statistics with disclosed samples: a 1,234-sender survey, a 3,000-person Copilot field study, Gallup workplace data, and claims we reject.
StatisticsEmail List Churn Statistics 2026: The Rate Most Reports Miscalculate
Email list churn statistics, formulas, and 2026 benchmarks for unsubscribes, bounces, inactive suppression, and the growth needed to replace them.
StatisticsGmail Statistics 2026: Users, Spam Blocking, Storage, and AI
Verified Gmail statistics from Google: user scale, spam blocking, storage, sender rules, AI changes, and what the numbers do—and do not—prove.
StatisticsNewsletter Statistics 2026: Readership, Opens, Clicks, and Churn
Current newsletter statistics with the sample behind every number: readership, open rates, clicks, unsubscribe rates, frequency, and measurement limits.
StatisticsSpam Statistics 2026: Volume, Sources, and Costs
Spam was 47.27% of global email traffic in 2024 — roughly 170 billion messages a day. Sourced numbers on volume, origin countries, and what it costs.