How can subject lines affect tab classification?
Subject lines influence tab classification:
Promotions indicators: Percentage discounts, "Sale," "Limited time," "Free shipping," urgency language, emoji overuse.
Primary indicators: Personal tone, questions, conversational language, response to previous correspondence.
Subject lines alone do not determine tabs, but they contribute to the overall classification signal.
A promotional subject with commercial content reinforces Promotions placement. A conversational subject with marketing content creates mixed signals.
Your cargo label affects first impressions, but inspectors look inside too.
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