How to Send Review Request Emails from WooCommerce to Mailchimp with N8n

Workflows > New workflow

Create new workflow in N8n

Start with a manual trigger to build the workflow, then switch to a schedule trigger later. This lets you test each step before automating the timing.

1. 1Click 'New workflow' in the N8n dashboard
2. 2Click the '+' button to add your first node
3. 3Select 'Manual Trigger' from the Core nodes section
4. 4Click 'Execute Node' to activate the trigger

Node > WooCommerce > Order > Get All

Add WooCommerce node to fetch orders

Connect to WooCommerce to pull orders that were delivered exactly 14 days ago. You'll filter by order status and delivery date.

1. 1Click the '+' button after the trigger node
2. 2Search for 'WooCommerce' and select it
3. 3Choose 'Order' as the resource and 'Get All' as the operation
4. 4Enter your WooCommerce store URL and REST API credentials
5. 5Set Status filter to 'completed' or 'delivered'

Node > Core > If

Filter orders by delivery date

Add a filter to only process orders delivered exactly 14 days ago. This prevents duplicate review requests.

1. 1Add an 'If' node after WooCommerce
2. 2Set condition to 'Date & Time'
3. 3Configure: '{{$json.date_completed}}' equals '14 days ago'
4. 4Use the expression: '{{DateTime.now().minus({days: 14}).toISODate()}}'
5. 5Connect both 'true' and 'false' outputs for testing

Node > Core > Set

Extract customer email and order data

Pull the customer email and order details you'll need for Mailchimp. This prepares the data for segment assignment.

1. 1Add a 'Set' node after the 'true' output of the If node
2. 2Click 'Add Value' and set Name to 'email'
3. 3Set Value to '{{$json.billing.email}}'
4. 4Add another value: Name 'order_id', Value '{{$json.id}}'
5. 5Add 'product_names' with Value '{{$json.line_items.map(item => item.name).join(", ")}}}'

Node > Mailchimp > Credentials

Connect to Mailchimp

Set up Mailchimp credentials to access your audience and segments. You'll need API key permissions for audience management.

1. 1Add a Mailchimp node after the Set node
2. 2Click 'Create New' under Credentials
3. 3Enter your Mailchimp API key from Account > Extras > API keys
4. 4Test the connection by clicking 'Test'
5. 5Save the credential with a descriptive name

Node > Mailchimp > Member > Get

Check if contact exists in Mailchimp

Before adding to a segment, verify the customer email exists in your Mailchimp audience. This prevents errors when tagging.

1. 1Set Resource to 'Member' and Operation to 'Get'
2. 2Select your main audience from the List dropdown
3. 3Set Email to '{{$json.email}}'
4. 4Enable 'Continue on Fail' in node settings
5. 5Click 'Execute Node' to test

Node > Core > If > Mailchimp > Member > Create

Create contact if they don't exist

Add a branch to create new Mailchimp contacts for customers who aren't in your audience yet. This ensures everyone gets review requests.

1. 1Add an 'If' node to check if the previous step succeeded
2. 2Set condition: '{{$node["Mailchimp"].json.id}}' 'is not empty'
3. 3On the 'false' branch, add another Mailchimp node
4. 4Set Operation to 'Create' and Resource to 'Member'
5. 5Map email and set Status to 'subscribed'

Node > Mailchimp > Member Tag > Create

Add contact to review-request segment

Tag the contact with your review-request segment so they receive the follow-up email campaign. Create this segment in Mailchimp first.

1. 1Add a Mailchimp node after both branches merge
2. 2Set Resource to 'Member Tag' and Operation to 'Create'
3. 3Select your audience and enter '{{$json.email}}' for Email
4. 4Set Tags to 'review-request-14d'
5. 5Enable 'Is Active' checkbox

Node Settings > Error Handling

Add error handling

Set up error handling to log failures without breaking the entire workflow. This prevents one bad order from stopping all review requests.

1. 1Click on the WooCommerce node settings (gear icon)
2. 2Go to 'Error Handling' tab
3. 3Select 'Continue on Fail'
4. 4Repeat for all Mailchimp nodes
5. 5Add a 'No Operation' node to catch errors

Node > Core > Cron

Switch to schedule trigger

Replace the manual trigger with a daily schedule to automatically check for orders needing review requests. Run this once per day.

1. 1Delete the Manual Trigger node
2. 2Add a 'Cron' node at the start
3. 3Set Mode to 'Every Day'
4. 4Set Hour to 10 and Minute to 0
5. 5Activate the workflow with the toggle switch

Workflow > Execute Workflow

Test with real data

Run a final test using actual completed orders to verify the entire flow works correctly. Check that contacts appear in your Mailchimp segment.

1. 1Click 'Execute Workflow' to run the full automation
2. 2Check your WooCommerce orders from 14 days ago
3. 3Verify those customer emails now have the review-request tag in Mailchimp
4. 4Confirm your Mailchimp campaign will trigger on this tag

Drop this into an n8n Code node.

{{DateTime.fromISO($json.date_completed).plus({days: 14}).toISODate() === DateTime.now().toISODate()}}

{{DateTime.fromISO($json.date_completed).plus({days: 14}).toISODate() === DateTime.now().toISODate()}}