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Email Spam Tester
Paste your subject line and email body to instantly check for spam trigger words, formatting red flags, and content issues that could land your message in the junk folder.
Why check your email for spam?
Spam filters scan your email content before it reaches the inbox. A single trigger word in the wrong place can send your message straight to junk — even if you have perfect authentication.
- analyticsContent Analysis
- Scans your subject line and body for 40+ known spam trigger words and phrases across 6 categories including urgency, financial, and deceptive language.
- gradeSpam Score
- Get a clear A+ to F grade based on how many spam signals your email triggers, so you know exactly where you stand before sending.
- lightbulbSpecific Recommendations
- Every flagged issue includes a description of the problem and why it matters, so you know exactly what to fix in your email.
- speedInstant Results
- Analysis runs entirely in your browser — no data is sent to any server. Your email content stays private and results appear instantly.
What the Spam Tester Checks
Our email spam checker analyzes multiple dimensions of your message to identify potential deliverability issues.
- securitySpam Trigger Words
- Detects words and phrases commonly flagged by filters, including financial terms, urgency language, and deceptive phrasing that signal spam.
- policySubject Line Quality
- Checks for ALL CAPS, excessive punctuation, missing subject lines, and length issues that can trigger immediate filtering.
- mailFormatting & Structure
- Evaluates text-to-image ratio, link count, URL shortener usage, and the presence of an unsubscribe link required for CAN-SPAM compliance.
- trending_upWeighted Scoring
- Subject line triggers are weighted 2x because filters scrutinize subjects first. Issues are ranked by severity so you can fix the biggest problems first.
Tips for Avoiding Spam Filters
Follow these best practices to keep your emails out of the junk folder and in front of your audience.
- check Write Like a Human
Avoid ALL CAPS, excessive punctuation, and hype words. Write subject lines that sound like a person, not a billboard. Aim for clear, honest language.
- check Clean Your Lists
Sending to invalid addresses increases bounces and spam complaints, damaging your sender reputation. Validate your list regularly with a tool like Truelist.
- check Authenticate Your Domain
Set up SPF, DKIM, and DMARC records to prove you are who you say you are. Use our deliverability checker to verify your setup.
What People Say
Trusted by thousands of marketers, founders, and SDRs
FAQ
Frequently asked questions
Can't find the answer you're looking for? Reach out to our customer support team.
- What is Truelist?
- Truelist is a cutting-edge email validation service designed to improve the accuracy and deliverability of your email campaigns by verifying email addresses in real-time and cleaning email lists.
- How does Truelist validate email addresses?
- Our service uses advanced algorithms and real-time checking to validate email addresses. This includes checking for format correctness, domain validity, and whether the email address is active and accepting mails.
- What are the benefits of using Truelist for email validation?
- By using Truelist, you can reduce bounce rates, avoid spam traps, improve your sender reputation, and ultimately increase the effectiveness of your email marketing efforts.
- Is it really unlimited?
- Yes, Truelist offers unlimited free email validation in our platform.
- Is Truelist compliant with data privacy regulations like GDPR?
- Yes, we prioritize data security and compliance with global privacy laws, including GDPR. Truelist is SOC 2 Type II certified, meaning our security controls are independently audited and verified. We ensure that all data is handled securely and with the utmost respect for privacy. Learn more about our security practices.
- Does Truelist have an API?
- Yes, we have a powerful API that allows you to integrate Truelist into your own applications and services. You can find our API documentation here.
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