Currently, when fetching contacts from lists, there is no way to only ask for contacts that have been created or modified since a particular date.
This is the API call that I am referring to:
https://api.maropost.com/accounts/:account_id/lists/:list_id/contacts(.:format)
It's a problem because there are hundreds of thousands of contacts in each list. We are using the APIs for analytics. If we want to refresh the contacts each day, there is no way to do it but to pull all of the data. I am running the job now and it is taking hours. If we could just get the incremental updates and additions it would be quick and less expensive in terms of computing resources.
