Choice of the list to synchronize
The List tab is divided into one sub-tab per shop language. A thumbs-up icon marks a language whose customers are synchronized, a triangle a language still waiting for its audience or its first synchronization.

Language audience
In Your List, choose the Mailchimp audience of the language and save. You need one audience per language, but the same audience can serve several shops. The Create a new list button creates an audience directly in Mailchimp, from the shop's contact details.
On saving, the module prepares the audience: it creates the missing merge fields, the interest category for customer groups and the webhook that notifies the shop of unsubscribes.
Full synchronization
- N clients to synchronize: sends all the customers of the language, in the progress window.
- Only new customers: offered before the first synchronization, the language is considered synchronized without sending the existing customers.
- Apply Mailchimp unsubscribes: switches the contacts unsubscribed or cleaned in Mailchimp back to “not subscribed” in PrestaShop.
- Send the N newsletter block subscribers: sends the visitors who subscribed through the newsletter block without a customer account (PrestaShop 1.7 and later).
- Archive the N contacts not subscribed: with the “Only subscribers” option, archives in Mailchimp the contacts who unsubscribed or never subscribed.
- Analyze last sync errors: see Analyzing errors.
The Stats panel shows the audience statistics provided by Mailchimp.
Merge fields

The module fills in the fields it knows:
FNAME,LNAME: first name and last name;BIRTHDAY: date of birth, if the customer gave it;ADDRESS,PHONE: address and phone;OPTIN: acceptance of partner offers in PrestaShop (1 or 0);VOUCHER: code of the current personal voucher;TRACKING: consent to open tracking (1 accepted, 0 refused).
A required radio button or drop-down field, created manually in Mailchimp, needs a default value: the panel flags it and lets you choose one, otherwise Mailchimp would reject the contacts.
Customer groups and interests
PrestaShop customer groups become Mailchimp interests, in the “PrestaShop Customer groups” category. Build your Mailchimp segments on these interests to target your wholesalers, your VIP customers or any other group.
