Domain & Sender Reputation

Understand and improve your domain reputation, sender score, and inbox placement rates.

Sender reputation determines whether providers trust your emails enough to put them in the inbox. Every domain and IP address that sends email has a reputation score, and it affects everything from inbox placement to delivery speed. These articles cover how reputation works, how to check yours, and what to do when it drops. Topics include complaint rates, blacklists, warmup schedules, and monitoring tools.

For a comprehensive overview, see our Sender Reputation Guide.

How to Check Your Email Domain Reputation

Learn how to check your domain's email reputation using free tools, understand reputation scores, and improve your domain's standing with email providers.

Email Sender Reputation: What It Is and How to Check It

Your sender reputation determines whether emails reach inboxes or get filtered. Learn what affects it, how to check it, and how to improve it.

Sender Score Explained: What It Is and How to Improve Yours

Understand what Sender Score is, how it's calculated, what a good score looks like, and actionable steps to improve your email sender reputation.

Email Spam Score Explained: What It Is and How to Improve It

Spam scores determine if your emails reach inboxes or get filtered. Learn how they're calculated and what you can do to lower yours.

Domain Spam Score: What It Is and How to Check It

Your domain spam score affects email deliverability and website credibility. Learn what it measures, how to check it, and how to improve a poor score.

Email Warmup: How to Warm Up a New Domain or IP

New domains and IPs need to build reputation before sending at volume. Learn the warmup process to establish deliverability without getting blocked.

Google Postmaster Tools: Monitor Your Email Reputation and Deliverability

Learn how to set up and use Google Postmaster Tools to monitor spam rates, domain reputation, authentication status, and delivery errors for Gmail recipients.

Inbox Placement: What It Is and How to Test It

Inbox placement measures whether your emails reach the inbox or get filtered. Learn what affects placement and how to test and improve it.

What Is a Good Email Deliverability Rate?

Understand email deliverability benchmarks and what rates you should target. Learn the difference between delivery rate and inbox placement rate.

How to Warm Up a New Email Domain: A Week-by-Week Plan

A practical week-by-week plan for warming up a new email domain. Volume targets, engagement strategies, and monitoring to build sender reputation from scratch.

Email Deliverability Metrics: Inbox Placement, Bounce Rate, and What to Actually Track

Most email metrics are misleading. Learn which deliverability metrics actually matter — inbox placement rate, bounce rate, complaint rate — and what benchmarks to aim for.

What Is Email Complaint Rate and How to Keep It Below 0.3%

Understand what email complaint rate is, why the 0.3% threshold matters, how to measure it with Google Postmaster Tools, and practical ways to reduce spam complaints.

Email Blacklist Check: How to Find and Remove Your Domain from Blacklists

Is your domain or IP on an email blacklist? Learn how to check all major blacklists, understand why you were listed, and follow step-by-step removal procedures.