Send shoppers to Customer.io

Included on the Growth plan and above.

What you're charged

Before we charge, we check whether the shopper is already in your Customer.io. New shoppers cost 2 credits, once; shoppers already there cost 1 credit, are never duplicated, and get a WhoLayer Returning Shopper event instead.

What Customer.io supports

• Checks your list first: yes.
• Refunds bounces: yes, bounces and spam complaints within 30 days.
• Deliverability Guard: a fixed cap of 50 new contacts a day (or your own setting, if lower), because we can't read your rates.
• Holdout report: no, so nobody is held out and every new shopper is sent.

Connect it

1. In Customer.io, open Account settings → API credentials and create a private key (it starts with sk_us_ or sk_eu_) for the workspace your store uses.
2. In WhoLayer, open Destinations, choose Customer.io, and paste the key. We pick the US or EU data center from the key.
3. Click Send test, then look for a person "avery.sample@example.com" with a WhoLayer Shopper Identified event.
4. Build a campaign triggered by that event (browse abandonment works best), and a second one on WhoLayer Returning Shopper.

Good to know

• Customer.io's API has no account-wide 7-day bounce and complaint counts, so the Deliverability Guard uses a fixed daily cap.
• Customer.io has no order records we can read, so there's no holdout report.
• Refunds use the bounce and spam-report suppressions Customer.io's email provider keeps.
• Opted-out people are never sent, and opt-outs take effect immediately.
• We encrypt your key when you save it and only ever show its last characters.