CRM migration
Field-level mapping, validation, and rollback between Workbooks and Mailchimp. We move data and schema; workflows are rebuilt natively in Mailchimp.
Workbooks
Source
Mailchimp
Destination
Compatibility
3 of 9
objects map 1:1 between Workbooks and Mailchimp.
Complexity
BStandard
Timeline
1-3 weeks
Overview
Moving from Workbooks CRM to Mailchimp is a narrowing migration: Mailchimp is an email service provider, not a CRM, so the Workbooks data model collapses onto a simpler Audience-and-Member structure. We migrate People contacts to Mailchimp Members, preserve Workbooks Organisation associations as merge fields or tags, carry custom field values into Mailchimp merge fields, and replicate any meaningful tag taxonomy. Opportunities, Cases, Quotations, Invoices, and Contracts have no Mailchimp equivalent and do not migrate; we flag them as scope items and deliver a written inventory of the orphaned record types. Workflows, automations, and sequences in Workbooks do not migrate because Mailchimp Journeys are a different automation paradigm. The migration is scoped to contact data only, with Mailchimp configured as the new email marketing system of record.
Every standard and custom field arrives verified.
AI proposes the map; you confirm before any record moves.
Parent–child, lookups, and ownership stay linked.
Calls, emails, meetings — with original timestamps.
Documents, uploads, and inline notes move with the record.
Why teams make this switch
Leaving
What's pushing teams away
Choosing
What's pulling them in
Object mapping
Each row shows how a Workbooks object lands in Mailchimp, including any object-level transformations, lookup resolution, or schema-design dependencies.
Typical mapping — final map is confirmed during the sample migration step.
Workbooks
People
Mailchimp
Member (in Audience)
1:1Workbooks People records map to Mailchimp Members within a single Audience. The email address is the required Mailchimp member identifier and dedupe key. First name and last name map to the FNAME and LNAME merge fields. We preserve the Organisation link as a merge field (COMPANY) and optionally as a Mailchimp tag derived from the Organisation name for segmentation. Phone numbers map to the PHONE merge field if present in Workbooks.
Workbooks
Organisation
Mailchimp
Merge field or Tag (per Audience)
1:1Workbooks Organisations do not have a direct Mailchimp equivalent because Mailchimp Audiences contain Members without a native company object. We extract the Organisation name and map it to a COMPANY merge field on the Member record. For segmentation use cases, we also apply the Organisation name as a tag on each Member so that audience filtering by company is possible in Mailchimp's reporting and campaign builder.
Workbooks
People: Custom Fields
Mailchimp
Merge Fields (per Audience)
lossyWorkbooks custom fields defined on the People record type map to Mailchimp merge fields. Text fields become TEXT merge fields with a 255-character limit; we flag any Workbooks text fields exceeding this length during scoping. Date fields become DATE merge fields. Number fields become NUMBER merge fields. Checkbox fields become CHECKBOX merge fields. Dropdown fields map to either a TEXT merge field or, if the Mailchimp plan supports it, a GROUP category for categorical segmentation. The customer specifies the merge field names during scoping.
Workbooks
Lead
Mailchimp
Member (in Audience)
1:1Workbooks Lead records with an email address map directly to Mailchimp Members. Lead status and lead source from Workbooks become merge fields (LEAD_STATUS, LEAD_SOURCE) or tags for segmentation in Mailchimp. Unconverted Leads (those not yet associated with a Person record) are included in the migration to preserve the full contact universe. Any Lead without a valid email address is held in a reconciliation report for the customer's admin to address before import.
Workbooks
Campaign (Workbooks)
Mailchimp
Campaign (Mailchimp)
lossyWorkbooks Campaign records hold marketing initiative metadata (name, status, start/end dates, associated members). Mailchimp Campaigns are the actual email sends. We do not migrate Workbooks Campaign records as data objects because they have no Mailchimp equivalent. We deliver a written inventory of Workbooks Campaign names, statuses, and associated member counts as a reference for rebuilding campaign structure in Mailchimp.
Workbooks
Activity: Email
Mailchimp
Not migrated
lossyWorkbooks email engagement history (logged emails linked to People or Organisations) has no Mailchimp equivalent. Mailchimp tracks sent and delivered emails at the campaign level, not as individual activity records on contact profiles. We do not migrate email engagement history; the customer's Mailchimp account begins tracking email engagement from the date of migration forward.
Workbooks
Opportunity
Mailchimp
Not migrated
lossyWorkbooks Opportunities represent deals in a pipeline with stage, probability, and value. Mailchimp has no pipeline, deal, or opportunity object. Opportunities, their stage history, probability weights, and expected close dates do not migrate. We flag this as an excluded scope item and recommend that the customer evaluate whether a separate CRM is needed for pipeline management if Opportunities data is critical to their business.
Workbooks
Case
Mailchimp
Not migrated
lossyWorkbooks Cases represent support tickets with status, priority, and activity log. Mailchimp has no case or ticketing object. Case records, their status and priority values, and case activity history do not migrate. We flag Cases as an excluded scope item.
Workbooks
Quotation / Invoice / Order
Mailchimp
Not migrated
lossyQuotations, Invoices, and Orders are available on Workbooks Business tier and above. Mailchimp has no quoting, invoicing, or order management capability. These objects do not migrate regardless of Workbooks subscription tier. We confirm the source tier during scoping and flag the absence of these objects if the Business tier is not active.
| Workbooks | Mailchimp | Compatibility | |
|---|---|---|---|
| People | Member (in Audience)1:1 | Fully supported | |
| Organisation | Merge field or Tag (per Audience)1:1 | Fully supported | |
| People: Custom Fields | Merge Fields (per Audience)lossy | Fully supported | |
| Lead | Member (in Audience)1:1 | Fully supported | |
| Campaign (Workbooks) | Campaign (Mailchimp)lossy | Fully supported | |
| Activity: Email | Not migratedlossy | Fully supported | |
| Opportunity | Not migratedlossy | Fully supported | |
| Case | Not migratedlossy | Fully supported | |
| Quotation / Invoice / Order | Not migratedlossy | Fully supported |
Gotchas + challenges
Platform-specific issues from each side, plus the pair-specific challenges that don't show up on either platform's page on its own.
Workbooks gotchas
Record save latency on large datasets
Custom Fields require manual field-level mapping
Quotation and Invoice exports require Business tier
iFrame custom fields export as URL strings only
Mailchimp gotchas
Contact count includes unsubscribed and non-subscribed records
Automation workflows cannot be exported
Account suspensions trigger silently during migration
Template HTML is Mailchimp-specific and may not render in other platforms
E-commerce data requires active store connection
Pair-specific challenges
Migration approach
Scoping and contact audit
We audit the Workbooks account across record types: People count with email addresses, Organisation count, Lead count, custom field inventory per record type, and tag taxonomy if used. We extract a sample of 50-100 records to verify field completeness, identify records missing email addresses, and assess custom field value distributions. We confirm the Workbooks subscription tier to determine whether Quotations, Invoices, and Orders are present. The output is a written migration scope with record counts, excluded object inventory, and a pre-migration contact hygiene recommendation.
Merge field design and tag taxonomy
We design the Mailchimp Audience merge fields based on the Workbooks People custom field inventory. Each Workbooks custom field is mapped to a Mailchimp merge field type (TEXT, NUMBER, DATE, CHECKBOX, or GROUP). We also design the Organisation-to-tag mapping: each unique Organisation name becomes a Mailchimp tag applied to all Members linked to that Organisation. The customer reviews and approves the merge field and tag design before we proceed to data extraction. This step prevents merge field type mismatches that would require reimport.
Data extraction and transform
We extract People, Leads, and Organisations from Workbooks via the MS Excel export layer supplemented by API validation. We transform the data: split the Organisation lookup into a COMPANY merge field value, generate tags from Organisation names, apply custom field values to merge fields, and flag records without valid email addresses. Records without email addresses are excluded from the Mailchimp import and placed in a separate reconciliation report for the customer to address manually.
Mailchimp audience preparation
We create the Mailchimp Audience in the customer's account (or confirm the existing audience is empty and ready for migration import). We configure the merge fields per the agreed design, create the Organisation-based tag group, and verify that the audience settings (double opt-in, notification triggers, GDPR compliance fields) match the customer's requirements. If a live Workbooks-to-Mailchimp reconciliation sync is in scope, we configure the integration credentials at this step.
Import and reconciliation
We import Members into Mailchimp via the Mailchimp API using batch operations with exponential backoff on rate limit responses. We validate row counts against the Workbooks source: total imported Members, Members with tags applied, and Members with each merge field populated. We run a spot-check comparison of 30-50 records against the Workbooks source to verify field-level accuracy. Any mapping errors are corrected and a delta re-import is run before sign-off.
Cutover and excluded scope handoff
We freeze new Workbooks contact writes during cutover and run a final delta export for any records created or modified since the initial extraction. We confirm Mailchimp as the active email marketing system of record. We deliver the excluded object inventory (Opportunities, Cases, Quotations, Invoices, Orders, Contracts, and Activity history) as a written document, along with the Workflow and automation inventory if the customer is rebuilding in Mailchimp Journeys. We support a three-day post-cutover window for reconciliation issues.
Platform deep dives
Workbooks
Source
Strengths
Weaknesses
Mailchimp
Destination
Strengths
Weaknesses
Complexity grading
Standard CRM migration. 2 of 8 objects need a mapping; the rest are 1:1.
Overall complexity
Standard migration
Derived from compatibility, mapping clarity, API constraints, and data volume across Workbooks and Mailchimp.
Object compatibility
2 of 8 objects need a mapping; the rest are 1:1.
Field mapping clarity
Field mapping is derived from defaults — final spec confirmed during the sample migration.
Timeline complexity
8-object category — typical timelines run 2–7 days end-to-end.
API constraints
Workbooks: Workbooks imposes rate limits and result-set size caps. Excessive calls are throttled by being delayed or redirected via a delaying URL; clients are expected to follow these redirects as normal operation. Specific request-per-minute thresholds are not publicly published..
Data volume sensitivity
Workbooks exposes a bulk API — large-volume migrations stream efficiently.
Estimator
Rule-based pricing — no per-record fees, no manual quotes. Migrations over 2M records are scoped individually.
Step 1
Pick a category, then your source and destination platforms.
Category
FAQ
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