VIP contact (Personalized PageRank top 10%) — protective -2 trash boost for low-frequency but important senders
top-decile-ppr-contact
What this tier means
Protective signal — actively prevents deletion. When this fires, Gorganizer keeps the email even if other signals say otherwise.
How Gorganizer detects this
Sender is in the top 10% of your inbox sender graph as ranked by Personalized PageRank — a graph algorithm that surfaces the contacts who matter most TO YOU, not just those who email you frequently. When this signal fires, the engine applies a -2 protective boost to the trash score, reducing false positives for low-frequency but important VIP contacts that graymail heuristics would otherwise mis-classify. Based on Page et al. (1999) + Haveliwala (2002) Topic-Sensitive PageRank with the user as seed.
False-positive guard
Every signal in Gorganizer feeds a multi-module score — never a sole verdict. This is a protective signal: when it fires, the email is kept even if other signals say "trash". Protective wins over everything.
About the scoring engine
Gorganizer's scoring engine emits over 1,800 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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