Content Filtering Triggers

What words or phrases trigger spam filters? (e.g., "free," "Viagra," urgency words) Does using ALL CAPS trigger spam filters? Does excessive punctuation trigger spam filters? Can images or HTML code trigger spam filters? Can links trigger spam filters (e.g., URL shorteners, number of links)? How can I avoid content-based spam triggers? Do “spammy” words really matter? What’s the myth vs reality of “buy now” and “free”? How do excessive punctuation or emojis impact filters? What’s the truth about using images only in email? How do bad HTML practices trigger filters? How do link mismatches raise red flags? Why does reply tracking or open tracking sometimes hurt? Do too many CTAs trigger filters? Does using all caps matter? Do shortened URLs harm deliverability? How do attachments affect spam filtering? Why is “from name” manipulation dangerous? How do deceptive reply chains trigger spam rules? How do filters detect template repetition across domains? What are myths that no longer apply (e.g., keyword stuffing)?