An email spam checker is a tool that analyzes your email content, structure, and technical settings to identify potential issues that could cause your messages to be flagged as spam. By evaluating factors such as keywords, formatting, and authentication protocols like SPF, DKIM, and DMARC, and monitoring the spam score, it ensures your emails meet industry standards and deliverability best practices. The goal is to help you craft emails that consistently reach your recipients’ inboxes, protect your sender reputation, and maximize engagement.

Our Spam Checker takes several factors into account to evaluate and spam test your copy’s spam potential:

• Spam words: Spam words can have three levels of severity: red, orange, and yellow. Try to remove all red and orange spam words from your email. A few yellow spam words are acceptable.
• Spintax: Variations of text enclosed in double curly braces {{…|…}} that allow you to rotate words and phrases, creating diversity in your emails.
• Variables: Short snippets of text enclosed in double curly brackets {{…}} that you can add to your cold emails to dynamically insert information about your leads.
• Links: Spam emails often try to trick you into clicking on suspicious websites. Many of these links are flagged by spam filters, which detect them and send such emails to junk. Instead, write your links as unclickable plain text, e.g., mywebsite.com, and avoid using hyperlinks.
• Images: Spam filters often flag emails with images, especially if the image-to-text ratio is too high. Emails filled with images and little text look suspicious, similar to what spammers often send.
• Emojis: Overusing emojis or using them in a way that seems spammy or unprofessional can trigger spam filters. To avoid this, use emojis sparingly and ensure they are relevant to your message.

Word count: Keep your emails brief and to the point. If you’re using Spintax or Variables, we calculate an approximate email length. The actual length may vary depending on the specific variables used.

These protocols validate the sender's identity and help prevent spoofing, phishing, and other malicious activities. Which is why, while our free Email Spam Checker tool doesn't analyze your SPF, DKIM and DMARC records, we have other free tools that do: 

• CNAME Checker
• SPF Checker
• SSL Checker

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Yes, the Email Spam Checker is totally free to use. You can analyze your emails for potential spam triggers completely free of charge. The tool is designed to be accessible to all users, whether you’re running personal email campaigns or managing large-scale business communications. There are no hidden fees, and you can use it as often as needed to ensure your emails perform at their best.

Emails can be flagged as spam due to a combination of content-related, technical, and behavioral factors. One common reason is the use of spammy or overly promotional language, such as excessive use of spam words like “free,” “buy now,” or “guarantee.” These keywords, when paired with elements like excessive punctuation (e.g., “!!!”) or capitalization (e.g., “LIMITED TIME OFFER”), can trigger spam filters. Poor email formatting, such as using too many images relative to text or including suspicious links, also raises red flags.

On the technical side, misconfigurations in email authentication protocols like SPF, DKIM, and DMARC can result in emails being flagged as spam. Without these properly set up, email providers cannot verify that your messages are legitimate, which makes them more likely to be blocked or sent to the spam folder. Another major cause is sending emails to outdated, invalid, or purchased email addresses without bulk verification. This increases the chances of high bounce rates and spam complaints, signaling to email providers that your domain is untrustworthy.

Additionally, low engagement rates, such as recipients not opening your emails or marking them as spam, negatively affect your sender reputation. A poor reputation can cause even legitimate emails to be flagged. Email providers use sophisticated algorithms that consider all these factors, so a holistic approach to content, technical setup, and audience engagement is essential to avoid being flagged as spam.

Using our free Email Spam Checker is a step closer to keeping you out of spam. But there’s several other factors that can impact your email deliverability like infrastructure, DNS settings, domain set up and sending patterns. If you’re looking to learn more about improving your email deliverability, check out our Salesforge Academy or our blog for actionable tipsyou can implement.

Once you test your email lower the spam potential of your email, you can use Salesforge to set up your campaigns and use our AI to personalize each email at scale.