{"success":true,"data":{"id":"subject-emoji-only","label":"Subject is entirely emoji with no text content — pure visual attention-grab spam shape","description":"The subject line consists ENTIRELY of emoji and whitespace with no letters or digits anywhere — for example `🎁🔥💰🎉` or `🚨🚨🚨`. Stronger sibling of the iter 399 `subject-excessive-emoji` signal which fires on 3+ emoji mixed with text. This signal targets the subset where the marketer (or spammer) stripped ALL the prose and left only attention-grabbing pictograms. Legitimate brands always pair emoji with descriptive text (\"🎉 Welcome to Acme\"); the no-text variant is essentially a \"look at me!\" notification with zero content claim. The detection uses Unicode category classes (`\\p{L}` for any letter, `\\p{Nd}` for any decimal digit) so it stays language-independent — a subject with Cyrillic / CJK / Arabic text + emoji would NOT fire because those scripts are still text. Weighted at +3, one tier above the +2 excessive-emoji signal because the absence of ANY text is itself diagnostic.","tier":"warning","category":"subject","isThin":false}}