Send shoppers to Mailchimp
Shopper ID with Mailchimp: what's charged, what's supported, and how to connect it.
Included on the Growth plan and above.
What you're charged
Before we charge, we check whether the shopper is already in your Mailchimp. New shoppers cost 2 credits, once; shoppers already there cost 1 credit, are never duplicated, and get a WhoLayer Returning Shopper event instead.
What Mailchimp supports
- Checks your list first: yes.
- Refunds bounces: yes, bounces and spam complaints within 30 days.
- Deliverability Guard: the daily cap adjusts to your 7-day complaint and bounce rates.
- Holdout report: no, so nobody is held out and every new shopper is sent.
Connect it
- In Mailchimp, open Profile → Extras → API keys and create a key. It ends in your data center, like
-us21. - Find the audience id under Audience → Settings → Audience name and defaults.
- In WhoLayer, open Destinations, choose Mailchimp, and paste the key and audience id.
- Click Send test. New shoppers are added to the audience as non-marketing (transactional) contacts with a "WhoLayer Shopper ID" tag, because they haven't opted in to your marketing. We never change the status of someone already in your audience.
- Build a Customer Journey that starts on the WhoLayer Shopper Identified or WhoLayer Returning Shopper event.
Good to know
- Mailchimp's orders API can't be read by date, so there's no holdout report.
- Deliverability Guard rates come from your campaign reports for the last 7 days.
- Refunds use members Mailchimp cleaned (hard bounces) and abuse reports on the audience.
- 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.
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