| Gmail | Cap for the AMP product grid. Gmail handles richer layouts well, so most setups use 3–6 here. |
| Apple Mail | Cap for the CSS-based display. Apple Mail clients vary in how much content they render cleanly — keep this lower (often 1–3) to avoid layout issues. |
| Fallback | Cap for the static HTML fallback shown in clients that don’t support AMP or advanced CSS. Keep this small (1–3) since the fallback is the least flexible layout. |
| Fallback Collection | The collection used when none of the pinned products match a submission — for example, if a customer’s answers don’t line up with any tagged product. Leave blank to show no recommendations rather than a generic set. |