{"id":476,"date":"2026-08-14T12:12:16","date_gmt":"2026-08-14T12:12:16","guid":{"rendered":"https:\/\/mail-tester.com\/blog\/?p=476"},"modified":"2026-08-14T12:12:17","modified_gmt":"2026-08-14T12:12:17","slug":"reduce-spam-score-improve-email-deliverability","status":"publish","type":"post","link":"https:\/\/mail-tester.com\/blog\/reduce-spam-score-improve-email-deliverability\/","title":{"rendered":"How to Reduce Spam Score and Improve Email Deliverability"},"content":{"rendered":"\n

Most email problems don\u2019t start with content; they start with trust. If email providers don\u2019t trust your domain, your emails won\u2019t reach the inbox, no matter how good they are. This trust is reflected in your email spam score.<\/p>\n\n\n\n

Things like poor authentication, low engagement, or sending emails to the wrong people can slowly push your emails into spam. The tricky part is that you may not notice it at first, until your results start dropping.<\/p>\n\n\n\n

In this guide, you\u2019ll learn what increases your spam score, how to check it, and simple ways to reduce it so your emails reach the inbox more often.<\/p>\n\n\n\n

What is Email Spam Score and How Does it Affect Email Deliverability<\/strong><\/h2>\n\n\n\n

Your email spam score is basically a rating that tells you how likely your email is to land in the spam folder instead of the inbox. Think of it like a trust score for your emails. A higher email spam rating means your email looks suspicious to inbox providers. A lower score means your email is more likely to reach the inbox safely.<\/p>\n\n\n\n

This score directly affects your email deliverability<\/a>. If your email spam rating is high, your emails are more likely to get filtered, delayed, or completely blocked. On the other hand, a low spam score improves your chances of landing in the inbox, getting opened, and actually driving results.<\/p>\n\n\n\n

In simple terms, the better your spam score, the better your deliverability, and that means more visibility, engagement, and conversions from your emails.<\/p>\n\n\n\n

Common Factors Affecting Your Email Spam Score<\/strong><\/h2>\n\n\n\n

If your emails keep landing in spam, there\u2019s usually a clear reason behind it. Here are some of the most common factors that can increase your spam score:<\/p>\n\n\n\n

Authentication (SPF, DKIM, DMARC)<\/strong><\/h3>\n\n\n\n

These are like identity proofs for your emails. Together, SPF, DKIM, and DMARC<\/a> tell receiving servers that your email is actually coming from you and not a scammer. If these are missing or set up incorrectly, your emails instantly look risky. Even a small misconfiguration can hurt your deliverability more than you would expect.<\/p>\n\n\n\n

Email Content<\/strong><\/h3>\n\n\n\n

What you write in your email matters a lot. Too many spammy words, ALL CAPS, or excessive links can trigger spam filters. Even things like poor formatting or broken links can increase your spam score. Keeping your content clean, simple, and relevant goes a long way.<\/p>\n\n\n\n

Sender Reputation<\/strong><\/h3>\n\n\n\n

This is your domain\u2019s overall \u201ctrack record.\u201d If people often ignore your emails, mark them as spam, or if you have high bounce rates, your reputation drops. Once that happens, even good emails can start landing in spam. Building a strong sender reputation<\/a> takes time, but losing it is very easy.<\/p>\n\n\n\n

Poor List Hygiene<\/strong><\/h3>\n\n\n\n

Sending emails to outdated or invalid addresses increases bounce rates and signals poor list quality. If people on your list don\u2019t engage or never signed up, it can lead to spam complaints. Over time, this damages your reputation and increases your chances of landing in spam folders.<\/p>\n\n\n\n

High Complaint Rate<\/strong><\/h3>\n\n\n\n

When recipients mark your emails as spam, it sends a strong negative signal to email providers. Even a small number of complaints can hurt your reputation. If this continues, your future emails are more likely to be filtered or blocked altogether.<\/p>\n\n\n\n

Sending From New Domains<\/strong><\/h3>\n\n\n\n

New domains don\u2019t yet have an established reputation. Sending large volumes of emails too quickly can look suspicious. Without a proper warm-up process, mailbox providers may treat your emails as risky and push them into spam.<\/p>\n\n\n\n

In short, your email spam rating depends on how trustworthy and well-managed your emails are. Fix these basics, and you\u2019re already ahead of most senders.<\/p>\n\n\n\n

How to Check Email for Spam Score<\/strong><\/h2>\n\n\n\n

If your emails aren\u2019t reaching the inbox, the first step is to check the email’s spam score. This helps you understand what\u2019s going wrong before you start blindly fixing things. The good news is that you don\u2019t have to guess. There are simple spam testing tools that can show you exactly why your emails might be flagged.<\/p>\n\n\n\n

They look at things like subject lines, content, links, and formatting to see if anything might trigger spam filters. You\u2019ll usually get a score along with suggestions on what to improve. This is super helpful when you\u2019re running campaigns and want to avoid surprises.<\/p>\n\n\n\n

Tips to Reduce Spam Score<\/strong><\/h2>\n\n\n\n

Below are the ways to maintain a low spam score and enjoy the most out of your email campaigns:<\/p>\n\n\n\n

Custom Domain Setup<\/strong><\/h3>\n\n\n\n

Instead of using the default settings from your email service provider, it\u2019s better to use your own domain for a few things. This helps build trust and improve your email reputation.<\/p>\n\n\n\n