Body HTML has a long comment with prose text — classifier-evasion via hidden filler or keyword-stuffing
html-comment-prose-payload
What this tier means
High-confidence threat indicator — phishing, impersonation, BEC, or scam pattern. Strong contributor to the trash decision.
How Gorganizer detects this
The HTML body contains an `<!-- ... -->` comment block ≥ 500 characters long with at least 50 alphabetic word chars of prose content. This is a classifier-evasion technique with two attack shapes: (1) **filler text injection** — attackers paste a few hundred chars of clean prose (Wikipedia paragraphs, news headlines) inside a comment to "balance" their classifier reputation, while the visible body is a tiny phish CTA; the bag-of-words scanner sees mostly normal text. (2) **keyword-stuffing** — attackers paste known-bad keywords (verify, password, login, urgent) inside a comment to confuse "did the classifier see suspicious words?" detectors. Outlook conditional comments (`<!--[if mso]>` / `<!--[if !mso]>` / `<![endif]>`) are explicitly excluded because they're legitimate compatibility markers used by every major ESP. Weighted at +2 — modest because some enterprise mail tooling does include long comment blocks for compatibility shims, so it pairs with other body signals rather than solo-firing.
False-positive guard
Every signal in Gorganizer feeds a multi-module score — never a sole verdict. This is a threat-tier signal — it adds a strong contribution to the trash score. The full pipeline still requires convergence across multiple modules + a margin over the safety floor before deletion happens, and Gmail's trash (30-day recovery) is always used — never permanent delete.
About the scoring engine
Gorganizer's scoring engine emits 2,143+ signals across six modules — headers, sender, subject, body, attachments, and structural metadata. Every email is scored by every module independently; the final verdict requires multiple modules to agree and the trash score to beat the safety floor by a margin.
Sacred safety guards — never delete starred emails, replies, calendar invites, receipts/invoices, or attachments — apply unconditionally regardless of any signal.
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