CRM migration
Field-level mapping, validation, and rollback between EXACT and Mailchimp. We move data and schema; workflows are rebuilt natively in Mailchimp.
EXACT
Source
Mailchimp
Destination
Compatibility
12 of 12
objects map 1:1 between EXACT and Mailchimp.
Complexity
BStandard
Timeline
24–72 hours
Overview
EXACT is a Dutch ERP and business management platform used primarily for accounting, invoicing, project tracking, and CRM by small and medium enterprises across Europe and North America. EXACT stores customer records, supplier data, invoices, purchase orders, and financial metrics such as payment terms, credit limits, and outstanding balances — all within an accounting-centric data model. Mailchimp is an email marketing platform built around audiences of subscribers, each with merge fields, tags, and segmentation data derived from customer interactions. There is no native concept of invoices, payment history, or financial metrics in Mailchimp's contact model. FlitStack AI migrates EXACT customer and contact records into Mailchimp subscribers, translating company attributes into merge fields and using purchase or invoice data to generate marketing-relevant tags such as 'high-value-customer', 'invoice-overdue', or 'annual-buyer'. Financial metrics like outstanding balances and credit limits are preserved as custom merge fields for segmentation. Workflows, approval chains, document templates, and accounting-specific automations in EXACT do not migrate — those are accounting operations, not marketing operations, and must be rebuilt manually in Mailchimp or accepted as lost. We use EXACT's REST API for data extraction, validate subscriber uniqueness and email deliverability before import, and run a delta-pickup window to capture any new EXACT customers created during the cutover.
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 EXACT 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.
EXACT
Customer (CRM module)
Mailchimp
Mailchimp Subscriber (Audience member)
1:1EXACT customers map directly to Mailchimp subscribers. The email address field is used as the Mailchimp subscriber key. Where EXACT stores multiple contacts per email (different roles at same company), FlitStack AI merges to a single subscriber record and retains role context in merge fields or tags.
EXACT
Contact (CRM module)
Mailchimp
Mailchimp Subscriber
1:1EXACT contacts who are not linked to a customer account are migrated as standalone Mailchimp subscribers. If the contact shares an email with an existing customer record, FlitStack flags the duplicate for manual resolution before the migration commits. The merge field for contact role, such as 'Billing Contact' or 'Purchasing Manager', is populated to preserve context.
EXACT
Company (CRM module)
Mailchimp
Mailchimp Merge Fields (COMPANY, INDUSTRY)
1:1EXACT company records do not have a direct equivalent in Mailchimp's flat subscriber model. Company name, industry, website, and number of employees are extracted from the EXACT company record and written as merge fields on the subscriber record linked to that company.
EXACT
Sales Invoice
Mailchimp
Mailchimp Tag (purchase history)
1:1Invoice lines from EXACT are aggregated per customer and used to generate Mailchimp tags such as 'purchased-product-[name]', '2019-first-buyer', or 'repeat-purchaser'. Invoice amounts and dates are also written to merge fields for RFM (recency, frequency, monetary) segmentation. These tags enable you to filter audiences by purchase history and past spend without exporting data back to EXACT.
EXACT
Outstanding Invoice / Accounts Receivable
Mailchimp
Mailchimp Merge Field (BALANCE) + Tag
1:1EXACT accounts-receivable data — total outstanding balance, oldest unpaid invoice date — is written to Mailchimp merge fields and also used to generate tags like 'invoice-overdue-30', 'invoice-overdue-60', or 'good-paying-customer' for targeted re-engagement campaigns. These tags allow you to create segments for customers with overdue invoices, enabling automated payment reminder emails or special offers for reliable payers.
EXACT
Payment Term
Mailchimp
Mailchimp Merge Field (PAY_TERM)
1:1EXACT payment-term codes (Net 30, Net 60, Cash) have no Mailchimp native equivalent. FlitStack creates a PAY_TERM merge field in Mailchimp to store the exact payment term string. This data supports invoice-related marketing such as renewal or payment reminder automations.
EXACT
Customer Category / Segment
Mailchimp
Mailchimp Tag
1:1EXACT customer category codes (retail, wholesale, government, etc.) are mapped to Mailchimp tags representing the same segments. Tags enable campaign targeting without requiring a separate CRM field in Mailchimp. Custom tags are applied during the migration run. If a category does not have a direct Mailchimp tag equivalent, FlitStack creates a descriptive tag preserving the original category label for reference.
EXACT
Salesperson / Account Owner
Mailchimp
Mailchimp Merge Field (SALES_PERSON)
1:1EXACT salesperson codes and names are stored as custom merge fields in Mailchimp. This preserves the account-owner relationship for internal routing or for building segment-filtered campaigns per sales rep. When a salesperson manages multiple customers, each subscriber can be tagged with the rep’s ID and name, allowing reports to show performance by rep in Mailchimp analytics.
EXACT
Credit Limit
Mailchimp
Mailchimp Merge Field (CREDIT_LIM)
1:1EXACT credit limit values migrate as a numeric Mailchimp merge field. Credit limit data supports segmentation for trade-credit outreach or high-value customer recognition campaigns, though it has no marketing-native behaviour in Mailchimp. You can filter contacts whose credit limit exceeds a defined threshold to create a VIP segment for exclusive offers or early access to new products.
EXACT
Custom Fields (all modules)
Mailchimp
Mailchimp Merge Fields or Tags
1:1EXACT custom fields across the CRM, sales, and service modules are enumerated during discovery. Each custom field is either created as a Mailchimp merge field (if within the 40-field limit and appropriate data type) or applied as a tag value for extended attributes.
EXACT
Attachment / Document (linked to customer)
Mailchimp
Not migrated
1:1EXACT documents and attachments linked to customer records do not migrate to Mailchimp. Mailchimp is not a document storage platform. Attachments are excluded from the migration plan and are flagged for manual handling if required post-migration. If you need these files in Mailchimp, you can host them externally (e.g., Google Drive) and include links in your campaigns.
EXACT
Workflow / Automation (EXACT)
Mailchimp
Mailchimp Automation (manual rebuild required)
1:1EXACT workflows, approval chains, and document automation do not have a Mailchimp equivalent and are not migrated. Marketing automation logic must be rebuilt in Mailchimp using the exported workflow definitions as a rebuild reference for your team. FlitStack provides a workflow map that outlines each trigger, condition, and action so your Mailchimp admin can replicate the logic efficiently.
| EXACT | Mailchimp | Compatibility | |
|---|---|---|---|
| Customer (CRM module) | Mailchimp Subscriber (Audience member)1:1 | Fully supported | |
| Contact (CRM module) | Mailchimp Subscriber1:1 | Fully supported | |
| Company (CRM module) | Mailchimp Merge Fields (COMPANY, INDUSTRY)1:1 | Fully supported | |
| Sales Invoice | Mailchimp Tag (purchase history)1:1 | Fully supported | |
| Outstanding Invoice / Accounts Receivable | Mailchimp Merge Field (BALANCE) + Tag1:1 | Fully supported | |
| Payment Term | Mailchimp Merge Field (PAY_TERM)1:1 | Fully supported | |
| Customer Category / Segment | Mailchimp Tag1:1 | Fully supported | |
| Salesperson / Account Owner | Mailchimp Merge Field (SALES_PERSON)1:1 | Fully supported | |
| Credit Limit | Mailchimp Merge Field (CREDIT_LIM)1:1 | Fully supported | |
| Custom Fields (all modules) | Mailchimp Merge Fields or Tags1:1 | Fully supported | |
| Attachment / Document (linked to customer) | Not migrated1:1 | Fully supported | |
| Workflow / Automation (EXACT) | Mailchimp Automation (manual rebuild required)1:1 | 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.
EXACT gotchas
Strict API rate limits gate bulk extraction
Exact Globe vs Exact Online feature drift
Workflow and signalling rules are not exportable
OAuth token lifecycle requires careful handling
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
Connect to EXACT API and enumerate all customer, contact, and invoice records
FlitStack AI authenticates against the EXACT Online API (or the EXACT Business middleware connector for on-premises deployments) using scoped read access. We enumerate all CRM module records — customers, contacts, companies, and invoices — and document the field inventory for each. EXACT custom fields across all modules are captured at this stage. A data-profiling pass identifies duplicate email addresses, records with missing email fields, and company-contact association patterns. We deliver a pre-migration data quality report before the first import runs.
Design Mailchimp merge fields and tag taxonomy based on EXACT data inventory
Based on the EXACT field inventory, FlitStack creates the required merge fields in your Mailchimp audience: financial fields (PAY_TERM, CREDIT_LIM, BALANCE, TOTAL_SPEND), company fields (COMPANY, INDUSTRY, WEBSITE), and operational fields (SALES_CODE, SALES_NAME, CUST_TYPE, CUST_SINCE). We design a tag taxonomy derived from EXACT customer categories, invoice statuses, and purchase history that enables the segmentation your marketing team needs without requiring a full CRM export from Mailchimp.
Run a sample migration with field-level diff for validation
A representative slice of 100–500 EXACT records migrates first — spanning customers with varying payment terms, credit limits, and invoice histories. FlitStack generates a field-level diff report that compares each EXACT field value against the corresponding Mailchimp merge field value. You verify that financial data, company associations, and contact details land correctly in Mailchimp before the full run commits. Sample validation typically completes within 4–8 hours.
Execute full migration with delta-pickup window
The full EXACT customer and contact dataset migrates to your Mailchimp audience. Duplicate email addresses are resolved per the pre-agreed deduplication rules. Tags are applied in bulk based on customer category, invoice status, and outstanding balance thresholds. After the initial load, a delta-pickup window of 24–48 hours captures any new EXACT customers created or modified during the cutover period. FlitStack's audit log records every record written, every merge field populated, and every tag applied.
Deliver reconciliation report and post-migration tag maintenance guide
FlitStack delivers a migration reconciliation report showing record counts by status (imported, deduplicated, skipped), merge field coverage per record, and tag application summary. A post-migration guide documents the Mailchimp tag taxonomy, explains which EXACT financial fields are available for segmentation, and provides SQL-style filter examples for building Mailchimp segments equivalent to EXACT customer views. One-click rollback is available within 48 hours of go-live if reconciliation identifies systematic data issues.
Platform deep dives
EXACT
Source
Strengths
Weaknesses
Mailchimp
Destination
Strengths
Weaknesses
Complexity grading
Standard CRM migration. All 8 core objects map 1:1 between EXACT and Mailchimp.
Overall complexity
Standard migration
Derived from compatibility, mapping clarity, API constraints, and data volume across EXACT and Mailchimp.
Object compatibility
All 8 core objects map 1:1 between EXACT and Mailchimp.
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
EXACT: 60 API calls per minute AND 5,000 API calls per day, per app per company. Signalled via X-RateLimit-Minutely-Remaining/Reset and X-RateLimit-Daily-Remaining/Reset headers. HTTP 429 returned on overrun..
Data volume sensitivity
EXACT 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
Answers to the questions buyers ask most during EXACT to Mailchimp migration scoping. Not seeing yours? Book a call.
Walk through your EXACT to Mailchimp migration with a real engineer — 30 minutes, free, written quote within 24 hours.
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