For merchants using Redo OMS.
Open the automation builder
Go to Settings > Order Fulfillment > Automations
Click Create New Automation
Name it, then open the advanced flow builder
Step 1: Define conditions
Drag Condition into the flow
Common options
Parcel weight
Item quantity
Product name
Product tags
Step 2: Weight-based logic
Less than 1 lb → Set parcel = Small
Condition: Parcel weight < 1 lb
Action: Set parcel to Small
1–2 lbs → Set parcel = Medium
Condition: Parcel weight < 2 lbs
Action: Set parcel to Medium
Over 2 lbs → Set parcel = Large
Default action for heavier shipments
Step 3: Quantity-based logic
Condition: Item quantity = 1 → Set parcel = Small
Condition: Item quantity = 2 → Set parcel = Medium
Default: Higher quantities → Set parcel = Large
Step 4: Product-specific logic
Condition: Product name includes “Maxi Dress” → Set parcel = Large (more delicate product)
Condition: Product name includes “Concert T-Shirt” → Set parcel = Small poly bag or Small box
Tip: Product tags are often more stable than names; prefer tags like fragile, bulky, apparel
Step 5: Combine conditions
Layer conditions to handle edge cases
Quantity + Product name
Weight + Quantity
Product tags + Weight
Save and prioritize
Click Save
Drag the automation higher in the list if it should run before others
Note: Automations at the top run first
Test your rule
Open a recent order that should match the conditions
Confirm the selected parcel type before purchasing the label
Repeat for each common product category and weight range
Tip: Keep a fallback rule at the bottom that sets a safe default parcel when no other rule matches
Key notes
Standardizing parcel selection reduces manual clicks and packing mistakes
Use clear naming for parcels so packers recognize sizes quickly
Review outcomes weekly and adjust thresholds as your catalog or packaging changes
FAQs
What happens if two rules could apply?
The first matching rule in priority order applies. Place specific rules above general ones.
Can I override the parcel type manually?
Yes. You can change the parcel before buying the label. If you re-rate later, automations may reapply based on rule order.
Do package selection automations affect service selection?
They can. Parcel dimensions and weight influence available rates, so run package selection before service selection in your automation priority.
Where do parcel sizes come from?
Define and manage parcel types in Settings > Order Fulfillment > Packages so the automation can select from those options.
Need more help?
If you can't find the answer you're looking for, our support team is here to help. Contact us through the support channel in your Redo dashboard or email support@getredo.com.