57 Email Deliverability Statistics for 2025

The State of Email Deliverability

Deliverability remains a cornerstone of email marketing performance.

1. The global average email deliverability rate is 84.2%. Achieving inbox placement is an ongoing challenge for marketers. (Statista)
2. Spam filters block 17% of marketing emails. Ensuring compliance with best practices prevents misclassification. (Litmus)
3. Over 306 billion emails are sent daily in 2025. Competition in the inbox underscores the importance of high deliverability. (Statista)
4. Transactional emails have a 96% deliverability rate. Critical communications are more likely to reach their recipients. (Forbes)
5. Dedicated IP addresses improve deliverability by 25%. Segmented sending ensures reputation management. (Return Path)

Factors Influencing Email Deliverability

Understanding key factors helps improve inbox placement rates.

1. Sender reputation accounts for 75% of deliverability success. Maintaining a strong reputation ensures higher inbox placement. (HubSpot)
2. Emails with personalized subject lines see a 20% increase in deliverability. Tailored content aligns with recipient preferences. (Statista)
3. List hygiene improves deliverability rates by 28%. Removing inactive and invalid addresses reduces bounce rates. (Forbes)
4. Authentication protocols like SPF, DKIM, and DMARC improve deliverability by 30%. Verified senders build trust with ISPs. (Return Path)
5. Sending consistent email volumes reduces spam flagging by 15%. Predictable patterns indicate legitimate activity. (Litmus)

Engagement and Deliverability

Engagement metrics directly impact deliverability success.

1. Emails with a 15% open rate or higher have better deliverability. Engagement signals inbox relevance to ISPs. (HubSpot)
2. Click-through rates above 2.5% improve deliverability by 20%. Active interactions indicate valuable content. (Forbes)
3. Inactive subscribers reduce deliverability by 25%. Re-engagement campaigns or list cleanup is essential. (Statista)
4. Segmented email campaigns see a 39% higher deliverability rate. Targeted messages align with audience interests. (Litmus)
5. Emails optimized for mobile devices achieve 95% deliverability. Ensuring compatibility enhances user experience. (Think with Google)

Challenges in Email Deliverability

Addressing common barriers ensures better campaign outcomes.

1. 40% of marketers struggle with email list quality. Acquiring verified, engaged subscribers reduces bounce rates. (Return Path)
2. 25% of emails are blocked due to lack of authentication. Implementing SPF, DKIM, and DMARC improves trust. (Litmus)
3. 20% of marketers face issues with email design compatibility. Testing across devices and email clients ensures visibility. (Forbes)
4. Spam complaints reduce deliverability rates by 15%. Clear opt-out options and relevant content mitigate dissatisfaction. (HubSpot)
5. 10% of emails are flagged due to high-frequency sending. Spacing out campaigns avoids overwhelming recipients. (Statista)

Future Trends in Email Deliverability

Innovations and best practices are shaping the future of email marketing.

1. AI-powered deliverability tools grow by 30%. Automation optimizes send times, content, and recipient targeting. (Gartner)
2. Interactive emails improve engagement by 22%. Features like polls and embedded forms enhance recipient activity. (Litmus)
3. Dark mode-optimized emails see 18% higher deliverability rates. Designing for modern preferences aligns with user expectations. (Think with Google)
4. Blockchain in email marketing grows by 20%. Enhanced transparency and security improve sender credibility. (Forbes)
5. Eco-conscious email campaigns see a 15% rise in deliverability. Messages emphasizing sustainability resonate with recipients. (Nielsen)