CRM migration

Migrate from EXACT to Mailchimp

Field-level mapping, validation, and rollback between EXACT and Mailchimp. We move data and schema; workflows are rebuilt natively in Mailchimp.

EXACT logo

EXACT

Source

Mailchimp

Destination

Mailchimp logo

Compatibility

100%

12 of 12

objects map 1:1 between EXACT and Mailchimp.

Complexity

BStandard

Timeline

24–72 hours

Rollback included Accuracy guarantee Field-level validation

Overview

What this migration involves

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.

Field-level fidelity

Every standard and custom field arrives verified.

Schema-aware mapping

AI proposes the map; you confirm before any record moves.

Relationships preserved

Parent–child, lookups, and ownership stay linked.

Full activity history

Calls, emails, meetings — with original timestamps.

Attachments & notes

Documents, uploads, and inline notes move with the record.

Why teams make this switch

Two sides of the same decision

Leaving

EXACT logo

EXACT

What's pushing teams away

  • Limited presence and support outside Europe (especially North America and APAC) push multinational growth-stage customers toward NetSuite, SAP Business One or Microsoft Dynamics.
  • Reporting capabilities lag competitors and frequently require Power BI add-on for advanced analysis — a friction point at renewal.
  • Some Exact Globe (on-premise) features have not fully migrated to Exact Online yet, frustrating long-time customers moving to the cloud.
  • API rate limits (60 calls/minute and 5,000 calls/day per app per company) constrain high-frequency integrations and force partners to negotiate higher limits.
  • Pricing escalates quickly when wholesale, manufacturing or project modules are added on top of base accounting, with full ERP packages reaching $554-$739/month.

Choosing

Mailchimp logo

Mailchimp

What's pulling them in

  • Generous free tier with up to 500 contacts allows small teams to validate email marketing before committing to a paid plan.
  • Intuitive drag-and-drop email builder and 130+ templates let non-technical users produce professional campaigns without HTML or CSS knowledge.
  • 300+ native integrations, especially Canva and Shopify, make it easy to connect existing tools without custom development work.
  • Detailed open-rate, click-through, and campaign analytics give small businesses actionable insights without a dedicated marketing team.
  • One-platform consolidation of email campaigns, automations, landing pages, and ads reduces tool sprawl for lean marketing teams.

Object mapping

How EXACT objects map to Mailchimp

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)

maps to

Mailchimp

Mailchimp Subscriber (Audience member)

1:1
Fully supported

EXACT 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)

maps to

Mailchimp

Mailchimp Subscriber

1:1
Fully supported

EXACT 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)

maps to

Mailchimp

Mailchimp Merge Fields (COMPANY, INDUSTRY)

1:1
Fully supported

EXACT 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

maps to

Mailchimp

Mailchimp Tag (purchase history)

1:1
Fully supported

Invoice 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

maps to

Mailchimp

Mailchimp Merge Field (BALANCE) + Tag

1:1
Fully supported

EXACT 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

maps to

Mailchimp

Mailchimp Merge Field (PAY_TERM)

1:1
Fully supported

EXACT 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

maps to

Mailchimp

Mailchimp Tag

1:1
Fully supported

EXACT 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

maps to

Mailchimp

Mailchimp Merge Field (SALES_PERSON)

1:1
Fully supported

EXACT 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

maps to

Mailchimp

Mailchimp Merge Field (CREDIT_LIM)

1:1
Fully supported

EXACT 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)

maps to

Mailchimp

Mailchimp Merge Fields or Tags

1:1
Fully supported

EXACT 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)

maps to

Mailchimp

Not migrated

1:1
Fully supported

EXACT 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)

maps to

Mailchimp

Mailchimp Automation (manual rebuild required)

1:1
Fully supported

EXACT 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.

Gotchas + challenges

What specifically takes care here

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 logo

EXACT gotchas

High

Strict API rate limits gate bulk extraction

Medium

Exact Globe vs Exact Online feature drift

Medium

Workflow and signalling rules are not exportable

Low

OAuth token lifecycle requires careful handling

Mailchimp logo

Mailchimp gotchas

High

Contact count includes unsubscribed and non-subscribed records

High

Automation workflows cannot be exported

Medium

Account suspensions trigger silently during migration

Medium

Template HTML is Mailchimp-specific and may not render in other platforms

Medium

E-commerce data requires active store connection

Pair-specific challenges

  • Email deduplication is mandatory — EXACT allows duplicate contacts by email

    EXACT's CRM module permits multiple contact records to share the same email address when contacts have different roles at the same company, or when records were created without email validation. Mailchimp enforces a strict one-subscriber-per-email-address policy — the platform uses email as the subscriber key and will reject or merge records that duplicate an existing subscriber address. FlitStack AI runs a pre-migration deduplication pass that groups EXACT contacts by email, identifies which contact role to prioritise for each email group, and presents the resolution plan to you before the import commits. If a contact has no email address in EXACT, FlitStack creates a placeholder identifier and flags the record for your team to supplement with a deliverable address before go-live.

  • Financial metrics have no native home in Mailchimp — transformation required

    EXACT stores payment terms, credit limits, outstanding balances, invoice totals, and salesperson assignments as first-class fields on customer and invoice records. Mailchimp has no native financial fields — the contact model is designed for marketing data (email, name, tags, merge fields). Migrating credit limit or outstanding balance data requires custom merge field creation in Mailchimp, and these fields behave like any other subscriber attribute: they can be used in segmentation filters, but they do not trigger Mailchimp-native alerts, workflows, or notifications. FlitStack AI surfaces all EXACT financial fields during discovery, creates the corresponding merge fields in your Mailchimp audience, and documents which fields are available for segmentation after migration.

  • Company hierarchy collapses into per-subscriber merge fields

    EXACT supports hierarchical parent-company and subsidiary relationships with N:N associations between companies and contacts. Mailchimp has no company object — the entire company record must be decomposed into per-subscriber merge field values. When an EXACT contact is associated with multiple companies (common in distribution or trading businesses), FlitStack AI writes the most recently modified or most recently associated company as the primary COMPANY merge field and stores additional company associations as tags or as a custom multi-value field in Mailchimp. The hierarchical relationship itself (parent-subsidiary structure) is not preserved and requires manual reconstruction if business logic depends on it.

  • EXACT API rate limits affect migration speed on large datasets

    EXACT Online's API enforces per-tenant rate limits on data export requests. For EXACT Business (on-premises) the API may not be available or may require a middleware connector to expose data externally. FlitStack AI accounts for EXACT's API pacing by throttling export requests to stay within the per-minute limit, which extends migration duration for accounts with 50,000 or more customer records. The delta-pickup window is sized accordingly to ensure that in-flight EXACT records created during the export are captured without requiring a second full API scan.

  • Workflows and automations do not migrate — marketing logic must be rebuilt

    EXACT workflows handle internal business processes such as invoice approval routing, document generation, and milestone-triggered alerts. These are accounting and operations automations, not marketing automations, and Mailchimp has no equivalent construct. FlitStack AI does not migrate workflow definitions. We export your EXACT workflow configuration as a structured reference document that your Mailchimp administrator can use to rebuild equivalent automation logic in Mailchimp's automation builder. The rebuild is a manual step that your team must plan for — FlitStack can provide a scope estimate for this work as a separate service.

Migration approach

Six steps for a successful EXACT to Mailchimp data migration

  1. 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.

  2. 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.

  3. 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.

  4. 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.

  5. 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

Context on both ends of the pair

EXACT logo

EXACT

Source

Strengths

  • Native Dutch and Belgian VAT, annual accounts and regulatory filing — no add-ons needed in core EU markets
  • Integrated finance, CRM, project, HRM, inventory and accountancy modules on one cloud platform
  • Well-documented REST/OData API with 350+ marketplace integrations and OAuth 2.0
  • Cloud implementations in 2-4 weeks for typical SME deployments
  • Strong accountant-client collaboration baked into the accountancy product line

Weaknesses

  • Limited regional support and local-compliance coverage outside EU (especially North America and APAC)
  • Reporting depth lags competitors; advanced analytics typically requires Power BI add-on
  • Exact Globe (on-prem) feature parity is incomplete in Exact Online for some advanced modules
  • API rate limits of 60/minute and 5,000/day per app per company constrain high-volume integrations
  • Workflow and signalling-rule configurations cannot be exported and must be rebuilt during migration
Mailchimp logo

Mailchimp

Destination

Strengths

  • Free plan up to 500 contacts makes it the lowest-friction entry point for new email marketers.
  • Drag-and-drop builder and template library produce polished emails without design or coding skills.
  • Strong deliverability reputation backed by years of email infrastructure expertise.
  • 300+ native integrations cover the most common marketing stack combinations out of the box.
  • Consolidated platform for email, automation, landing pages, and ads reduces the number of tools small teams must manage.

Weaknesses

  • Contact-based pricing model charges for unsubscribed and non-subscribed records, inflating costs relative to competitors.
  • Five-step automation limit on Standard tier forces upgrades for basic customer journeys, a frequently cited frustration.
  • Template HTML is Mailchimp-specific and does not export cleanly for use in other email platforms.
  • Post-Intuit roadmap uncertainty means customers cannot confidently plan long-term platform investments.
  • Account suspension risk without clear pre-warning disrupts campaign scheduling for affected businesses.

Complexity grading

How hard is this migration?

Standard CRM migration. All 8 core objects map 1:1 between EXACT and Mailchimp.

B

Overall complexity

Standard migration

Derived from compatibility, mapping clarity, API constraints, and data volume across EXACT and Mailchimp.

  • Object compatibility

    A

    All 8 core objects map 1:1 between EXACT and Mailchimp.

  • Field mapping clarity

    C

    Field mapping is derived from defaults — final spec confirmed during the sample migration.

  • Timeline complexity

    B

    8-object category — typical timelines run 2–7 days end-to-end.

  • API constraints

    B

    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

    A

    EXACT exposes a bulk API — large-volume migrations stream efficiently.

Estimator

Estimate your EXACT to Mailchimp migration cost

Rule-based pricing — no per-record fees, no manual quotes. Migrations over 2M records are scoped individually.

Step 1

What are you migrating?

Pick a category, then your source and destination platforms.

Category

FAQ

Frequently asked questions about EXACT to Mailchimp data migrations

Answers to the questions buyers ask most during EXACT to Mailchimp migration scoping. Not seeing yours? Book a call.

Can't find your answer?

Walk through your EXACT to Mailchimp migration with a real engineer — 30 minutes, free, written quote within 24 hours.

Book a free 30 minute consultation

Most EXACT to Mailchimp migrations complete within 24–72 hours of clock time for under 50,000 contact records. Larger EXACT deployments with 100,000 or more customer records, complex multi-company structures, or extensive invoice history that requires aggregation into Mailchimp merge fields extend the timeline to 4–7 days. EXACT Online API rate limits on large exports are the primary variable that affects pacing.

Adjacent paths

Related migrations to explore

Ready when you are

Move from EXACT.
Land in Mailchimp, intact.

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