Best of the inbox: the Promotions tab, demystified

Best of the inbox: the Promotions tab, demystified
Landing in Gmail Promotions isn't spam — but it quietly halves opens for affiliate sends. The honest resources on what actually moves the tab.

📑 Tab placement
— Gmail's own Promotions-tab documentation — what triggers the classifier (bulk markers, certain link/image ratios). Read the primary source before trusting tactics.
— A 'plain-text vs heavy-HTML' placement test writeup — the data on why stripped-down emails sometimes hit Primary.
— Litmus annotation/Gmail-promotions-markup guide — when you'd actually want to embrace Promotions instead of fighting it.

🧪 Tests
— A reply-and-engagement-signal teardown — why first-send engagement nudges later placement.

Saved you ~2 hours. The uncomfortable truth in these: for most affiliate offers, optimizing within Promotions beats losing battles for Primary.