How to trigger workflow for a specific product size ordered after shipment delivered

Hey ​@k_s 

I think you should flip the trigger to Delivered Shipment, and handle the size check separately, since you've already mentioned that variant-level filter isn't available on those metrics. so now you can add a conditional split early in the flow to check whether the person ordered the specific size. The split would look at the Ordered Product metric and check if the variant size property matches, within a reasonable window (say, the last 7-10 days).

Trigger: Delivered Shipment → Conditional Split: "what someone has done > Ordered Product > where Variant option Size equals [Size] > at least once in the last 7 days" → YES branch gets your emails, NO branch goes to a dead end or exit.

This way the flow only fires after delivery, and the size check runs at that point against recent order history rather than at the trigger moment. The 7-14 day window is usually safe for standard fulfillment timelines but adjust it up if your products take longer or shorter to ship.

please note,, that if a customer ordered multiple items in the same order with different sizes, the conditional split may still pass for someone who ordered the target size alongside others. If that's a concern,. you'd want to tighten the lookback window to something like 3 days to reduce the chance of catching an older qualifying order by mistake.

Let me know if you have any follow up questions., I hope this helps and thank you for sharing your question here in the community.

CHeers,

Arpit