Hey @Si_Hobbs,
I tested this on my dev store and couldn’t replicate it. fulfillmentTrackingInfoUpdate with notifyCustomer: true sent the Shipping Update email both when notifyCustomer was omitted on fulfillmentCreate and when it was explicitly set to false.
A couple of things to check:
- What delivery method are these orders using? There are known cases where notifications don’t fire for local delivery and pickup orders even with
notifyCustomer: true:
Local Delivery: Can't send single "delivered" email with delivery details via API
[Bug] Local Delivery Notification - Order out for local delivery - Is the Shipping Update notification enabled in Settings > Notifications?
If neither applies, can you share an example of the full requests you are sending?