The 30–60 minute delay then 24-hour follow-up is a sensible cadence. The part I would harden next is the stop conditions: once the cart converts or the customer replies, every channel should cancel, and WhatsApp especially needs a clear opt-in trail before the first send....
Most "where is my order?" emails can be answered by the store itself.
Shopify's new customer accounts let shoppers sign in with an emailed code, track orders, buy again, and start returns.
Letting shoppers track orders and start returns themselves kills a lot of support emails before they exist. Do you customize the new accounts pages per brand, or is the default good enough?
For the human-in-the-loop approvals on complex cases, what decides when a ticket gets escalated: a confidence score from the classification step, or rules like keywords and customer tier? That threshold is usually where these n8n flows either save time or create review noise.