Email Subject & Body Scanner
Audit your email copy against 5 major spam filter heuristic algorithms.
The 5 High-Risk Spam Keyword Categories
Avoid these phrasing patterns to protect your sender domain reputation.
Words like "Act now!", "Immediate action required", "Expires today". Create genuine urgency rather than artificial pressure.
Phrases like "100% free", "Earn $$$", "Guaranteed cash bonus". Antispam filters heavily penalize get-rich-quick claims.
Statements like "This is not spam", "Dear friend", "You have been selected". Authentic business communications never need to deny being spam.
Terms like "Miracle cure", "Unbelievable results", "Secret revealed". Keep copy grounded in verifiable facts.
Warnings like "Suspicious activity", "Verify credentials", "Account suspended". Only use in verified transactional security events.
Frequently Asked Questions
What triggers an email to be sent to the spam folder?
Email spam filters like SpamAssassin, Google Postmaster, and Microsoft SmartScreen evaluate a combination of sender domain authentication (SPF/DKIM/DMARC), text content (spam trigger keywords, excessive capital letters, excessive exclamation marks), link reputation, and compliant unsubscribe options.
Why should I avoid using link shorteners in emails?
Spammers frequently use link shorteners (like bit.ly or tinyurl) to mask malicious URLs. Because filters cannot easily inspect the destination without expanding the link, shortened links trigger immediate score penalties in modern antispam algorithms.
What is a good deliverability score?
A score of 85 or above represents low risk and high deliverability. Scores between 70 and 84 suggest minor optimizations are recommended, while scores below 70 are at high risk of spam folder placement.