Spam Trigger Word Checker
Analyze email content for delivery-killing trigger words, formatting errors, and spam signals using industry-specific heuristic scoring.
- No triggers detected yet...
About
Email deliverability is a war of algorithms. Internet Service Providers (ISPs) like Gmail and Outlook utilize complex Bayesian filters and heuristics to protect users from unsolicited mail. A single trigger word in your subject line can route your campaign directly to the Spam folder, bypassing the Inbox entirely.
This tool mimics those filtering engines. It scans your content against a database of known spam vectors, analyzing keyword density, formatting risks (like ALL CAPS usage), and punctuation anomalies. Unlike basic checkers, it applies contextual weighting - recognizing that "free" is common, but "100% FREE!!!" is suspicious. Use this utility to sanitize your copy, lower your spam score, and protect your domain reputation.
Formulas
The Spam Probability Score (S) is calculated using a weighted summation of detected triggers, normalized by content length and penalized by location (Subject vs. Body).
Where:
wi = Base weight of trigger word i (1-10 scale).
Li = Location Multiplier (2.5 for Subject, 1.0 for Body).
Pfmt = Penalty for formatting (e.g., CAPS ratio > 0.4).
Reference Data
| Trigger Category | Risk Level | Typical Examples | Impact on Deliverability |
|---|---|---|---|
| Financial Scams | CRITICAL | $$$, Cash bonus, No credit check, Wire transfer | Immediate filtration by 95% of corporate firewalls. |
| Urgency/Pressure | HIGH | Act now!, Don't delete, Urgent, Instant access | Triggers behavioral filters; reduces open rates. |
| Exaggerated Claims | MEDIUM | Guaranteed, Risk-free, Miracle, #1 | acceptable in moderation; fatal in subject lines. |
| General Marketing | LOW | Click here, Subscribe, Bonus, Deal | Safe in body copy; avoid overuse. |
| Formatting Errors | VARIABLE | ALL CAPS SUBJECTS, Re: (fake reply), !!! | High correlation with phishing attempts. |