Email Deliverability: How to Improve Your Chances of Reaching the Inbox

Email deliverability is the ability to get legitimate email accepted and placed where recipients can reasonably see it. There is no single switch that guarantees inbox placement.

Updated September 2026

Start with permission

Send to people who knowingly asked to hear from you. Purchased or scraped lists create both compliance and reputation problems.

Authenticate your sending domain

Set up the domain-authentication records recommended by your email provider. Common standards include SPF, DKIM and DMARC, each serving a different role in verifying and governing mail.

Keep the list healthy

Remove invalid addresses, respect unsubscribes promptly and avoid repeatedly mailing people who clearly do not want the messages.

Send relevant email consistently

Subscriber behavior can influence sender reputation signals. Consistent relevance is more durable than tricks intended to force opens.

Treat deliverability as an operating discipline

Monitor bounces, complaints, engagement and provider guidance over time. Technical setup matters, but subscriber expectations matter too.