Background:

Regarding the mailchimp / odp sync - https://support.optimizely.com/hc/en-us/articles/4407269232141-Integrate-Mailchimp.

When the mailchimp sync is enabled, it pulls over all contacts from a specified list and it also pulls over 'all customer data from the previous 60 days'. Ideally, it would only sync data for contacts in the list you specify.

Problem: Unnecessary PII expose risk

If we want to sync a list with a few hundred contacts, but the Mailchimp account contains other lists with millions of contacts - and these lists are part of ongoing campaigns - then ODP will pull-in millions of unnecessary contacts.

Feature Request:

When you nominate a list to sync, only sync contact and event data relating to contacts in that list.