What happens when I delete a campaign in Mailchimp?

When you delete a campaign in Mailchimp, it does not automatically disappear from Salesforce because the sync between the two platforms runs incrementally. This means only new or modified data is updated during the sync, and deleted campaigns remain in Salesforce unless you perform a full sync. To ensure deleted campaigns are removed from Salesforce, you will need to manually trigger a full sync between the two systems.

An incremental sync, which is the default, helps maintain real-time data updates but does not include deletions. A full sync, on the other hand, comprehensively synchronizes all data between Mailchimp and Salesforce, including the removal of any deleted campaigns from Salesforce. If you want to ensure that deleted campaigns are accurately reflected in Salesforce, it is essential to occasionally run a full sync.