How do I work with Salesforce Multi-Select Picklist Fields in Mailchimp

Unfortunately, Mailchimp has no standard merge field type equivalent to Salesforce’s multi-select picklist. The only multi-select field is used exclusively for subscribers to manage their Mailchimp Group choices on signup forms and preference centers.

For other uses, the best workaround is to map your Salesforce multi-select picklist field to a Mailchimp text field. In this case, all selected values from Salesforce will be combined into a single text string, typically separated by a character like a comma or semicolon.

For example, if your multi-select field in Salesforce contains the values “A,” “B,” and “C,” these will appear as “A, B, C” in the Mailchimp text field.

Notes: You can still build segment rules off this text field, using the Contains operator. Your segment rule in Mailchimp may read Merge Field CONTAINS "A". The segment would include any member with A as one of the values in the comma-separated text field.