Modify the subscription object before it is executed.
This filter can be used to prevent empty form fields erasing values already stored in the mapped MailChimp MMERGE fields when updating an existing subscriber.
MailChimp Feed Meta
IntroductionThe _autolink_feed-object meta for the _autolink_mailchimp-add-on is an associative array containing the properties which determine how the add-on should process the form submission.
Use this filter to modify whether a user that is already subscribed to your list has their groups replaced when submitting the form a second time.
Use this filter to modify a value before it is sent to the MailChimp API.
Use this filter to modify whether a user that currently has a status of unsubscribed on your list is resubscribed. By default, the user is resubscribed.