Indonesia, April 24 -- Sinch Mailgun, part of Sinch, has released its Email Impact Report 2026 , introducing new industry benchmarks across 10 high-volume sending sectors and revealing a gap between email performance and execution.

Based on insights from more than 400 billion emails sent in 2025 and a global survey of over 1,200 email senders, the report shows that while email remains a critical, high-performing channel, poor deliverability is leaving significant revenue on the table. Nearly 18% of emails fail to reach the inbox, putting up to a fifth of potential return on investment at risk for many organisations.

78% of respondents say email is critical to business success. At the same time, the research highlights a growing disconne...