Reports
Research from the Inbox OSS deliverability team
Anonymized, aggregate insights from our customer base. Free, no email-wall.
Library
Available reports
2026 State of Email Deliverability
How 14 billion emails performed across mailbox providers in 2025-2026. Anonymized aggregate data from Inbox OSS customers.
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Q1 2026 Spam-Trap Trends
Where new spam traps are being seeded, how they reach lists, and what to do about it.
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Authentication Adoption Index
DMARC, BIMI, and MTA-STS adoption across Fortune 5000 sending domains.
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Gmail Promotions Tab Survival Guide
Six data-backed plays for staying in Primary instead of Promotions.
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2026 Email Benchmarks Report
Industry-by-industry medians for open, click, bounce, and complaint rates.
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