Attachment has no filename — malformed bulk mailer or deliberate content-scanner evasion
attachment-no-filename
What this tier means
Warning signal — bulk / marketing / mild spam. Contributes to the trash score but is not by itself sufficient.
How Gorganizer detects this
An attachment arrived with an empty or whitespace-only filename. Standard MUAs (Outlook, Gmail, Apple Mail, Thunderbird, and the major bulk-mailer ESPs) always assign a filename to every attached part — the Content-Disposition header carries a `filename="..."` parameter even for anonymous parts. An attachment with no filename means either (1) a malformed bulk mailer that skipped the header (rare but legitimate edge), or (2) a deliberate evasion technique: some malware tooling omits the filename so content scanners that rely on filename-extension matching for threat detection (exe / double-extension / archive checks) have no signal to work with. Weighted at +2 — low because the legitimate malformed-bulk case exists, but it pairs well with other attachment signals: an unnamed attachment with a suspicious MIME type or mismatched extension stacks above the delete threshold.
False-positive guard
Every signal in Gorganizer feeds a multi-module score — never a sole verdict. This is a warning-tier signal — bulk / marketing / mild spam. It contributes to the trash score but never triggers deletion on its own. Gorganizer requires multiple signals + a margin over the safety floor before any email is moved to trash.
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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