<b>Spam filters in 2026: what actually trips them</b>
The resources that killed the 'avoid the word FREE' folklore.
🚀 Deliverability
— Word to the Wise on content filtering — modern filters weight reputation and engagement far above keyword lists; read this and delete your 'spammy words' spreadsheet.
— SpamAssassin rule docs — if you must check content, check against the actual rules, not a 2012 blog post.
— Litmus spam-testing guide — how seed-based spam scoring works and where it misleads.
— Gmail's 'why messages go to spam' help page — boring, official, and clearer than most paid courses.
Made the cut because they replace superstition with the real ranking signals: authentication, engagement, list hygiene.
Saved you ~2 hours of editing subject lines that were never the problem.
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<b>Spam filters in 2026: what actually trips them</b>
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