Migrate from Marketing Tools Growth Marketing Platform to Mailchimp

Marketing Tools Growth Marketing Platform Contact records map directly to Mailchimp Audience members. Standard fields (email, first_name, last_name, phone) map to Mailchimp merge fields EMAIL, FNAME, LNAME, and PHONE. We split exports into batches of no more than 5,000 records per API call to avoid the UI timeout issue reported on the source platform. Company linkage from Marketing Tools Growth Marketing Platform maps to the COMPANY merge field in Mailchimp; Mailchimp does not have a native Companies/Accounts object, so organization data lives as a per-contact field rather than a related record.

Mailchimp does not have a native Companies object. HubSpot-style company records link to Contacts via the contact-company pair exported from Marketing Tools Growth Marketing Platform. We flatten the company name and primary domain into the Mailchimp COMPANY merge field. If the customer uses company-level data for segmentation (e.g., industry, employee count), we recommend creating custom merge fields during Mailchimp setup and populating them from the source export before import.

Marketing Tools Growth Marketing Platform tags export as flat key-value pairs per contact and map directly to Mailchimp tags. We flag any tags that exceed Mailchimp's character limit (255 characters per tag name) and either truncate or surface them as custom merge fields before import. Tags used for behavioral classification (e.g., product interest, lifecycle stage) become Mailchimp tags; tags used for content classification become Mailchimp groups or categories.

Marketing Tools Growth Marketing Platform segment definitions are rule-based and platform-specific in syntax. We cannot export the rule logic because it is not accessible via documented API. Instead, we extract the per-contact segment membership list during export, then replicate membership by adding each contact to the corresponding Mailchimp segment during import. The underlying rule logic must be rebuilt in Mailchimp's segment builder post-migration; we document the source segment names and approximate rule logic during discovery.

Marketing Tools Growth Marketing Platform campaign metadata (name, status, start/end dates, channel, subject line) exports from the platform and maps to Mailchimp campaign records. Campaign performance metrics (open rates, click rates, revenue attribution) are not available via standard export on the source platform. We recommend exporting reporting snapshots from Marketing Tools Growth Marketing Platform's analytics dashboard before the cutover date and storing them as a reference CSV. Mailchimp campaign performance is available post-migration in the platform's reporting dashboard.

Workflow journey definitions in Marketing Tools Growth Marketing Platform live in the platform's internal automation engine and are not accessible via export. We cannot migrate them as code. During discovery, we document every active journey by capturing screenshots and recording the trigger, conditions, branches, and action steps. Mailchimp's Customer Journey builder is the rebuild target; we provide a journey inventory document with recommended Mailchimp equivalents for each step.

Custom object schema is not publicly documented in the available evidence for Marketing Tools Growth Marketing Platform. We attempt field-level mapping during scoping by requesting a sample export from the customer's instance. Where custom object records reference a Contact (via foreign key), we flatten the relevant fields into Mailchimp custom merge fields or tag values. If the schema is entirely undocumented, we flag the custom object as requiring a custom extraction approach and may recommend a separate data extraction engagement before migration can proceed.

File attachments associated with Contacts or Campaigns are not available via the documented export path on Marketing Tools Growth Marketing Platform. We do not migrate attachments. Customers should export attachments separately via the platform's UI export feature before the cutover date and re-upload them to Mailchimp Content Studio manually post-migration.