CRM migration

Migrate from Mautic to Mailchimp

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

Mautic logo

Mautic

Source

Mailchimp

Destination

Mailchimp logo

Compatibility

75%

6 of 8

objects map 1:1 between Mautic and Mailchimp.

Complexity

BStandard

Timeline

1-2 weeks

Rollback included Accuracy guarantee Field-level validation

Overview

What this migration involves

Moving from Mautic to Mailchimp is a data consolidation migration, not a like-for-like platform switch. Mautic is a full marketing automation suite with CRM capabilities, custom objects, lead scoring, multi-channel campaigns, and self-hosted deployment options. Mailchimp is a cloud email marketing platform organized around Audiences (contacts), Campaigns, Templates, and Customer Journeys (automations). The platforms share contact records, tags, and segment logic, but diverge sharply on custom objects, lead scoring, companies, stages, and campaign automation architecture. We map Mautic Contacts to Mailchimp Audience members with all standard and custom contact fields translated to Mailchimp merge fields. Mautic Companies have no direct Mailchimp equivalent and are stored as merge field blocks. Mautic Tags migrate as Mailchimp Tags. Segments export as filter definitions that the customer rebuilds as Mailchimp Segments. Campaigns migrate as campaign metadata (name, send date, open rate, click rate) but not the underlying automation logic. Mautic Custom Objects, Points, Stages, Landing Pages, Assets, and Reports do not migrate. We deliver a written inventory of these non-portable objects for the customer's admin to rebuild in Mailchimp.

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

Mautic logo

Mautic

What's pushing teams away

  • Upgrading between major versions (4→5→6) is not a simple in-place update; plugins and custom code frequently break silently with no errors logged.
  • MySQL/MariaDB column-size limits and index-per-table restrictions throttle performance at contact counts above 500K, forcing expensive database workarounds.
  • Self-hosting requires dedicated server management, security patching, and cron job maintenance that marketing teams are not equipped to handle.
  • The UI and documentation lag behind feature development, making routine tasks like bulk contact exports unreliable in newer versions (v6.0.0 CSV exports queue but do not reliably email).
  • Enterprise support tiers at $20K–$30K/year are priced similarly to SaaS alternatives, removing the cost advantage for organizations that need professional SLA coverage.

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 Mautic objects map to Mailchimp

Each row shows how a Mautic 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.

Mautic

Contact

maps to

Mailchimp

Audience Member

1:1
Fully supported

Mautic Contact records map directly to Mailchimp Audience members. All standard fields (email, firstname, lastname, phone, title, city, state, country, company) map to their Mailchimp merge field equivalents. Custom contact fields map to Mailchimp merge fields with type conversion: text fields to text merge fields, date fields to date merge fields, number fields to number merge fields. The primary key is the contact email address. We resolve any duplicate email addresses during import by matching on email and updating existing Audience members rather than creating duplicates.

Mautic

Company

maps to

Mailchimp

Audience Merge Field Block

many:1
Fully supported

Mautic Company records have no direct Mailchimp equivalent because Mailchimp has no native company or account object. We flatten company data into the contact record: company name becomes the COMPANY merge field, and company address fields (street, city, state, zip, country) are stored in a structured merge field block or appended as text fields on the contact. One-to-many contact-to-company relationships in Mautic (a contact can belong to multiple companies) cannot be preserved in Mailchimp; we attach the primary company record only and note the limitation for the customer's CRM integration plan.

Mautic

Tag

maps to

Mailchimp

Tag

1:1
Fully supported

Mautic Tags are flat string labels applied to contacts. They map directly to Mailchimp Tags, which are applied identically to Audience members. All tag names and memberships transfer without transformation. Tag-based segmentation in Mautic does not carry over as active segment definitions; the customer rebuilds segment logic in Mailchimp Segments using the same tag conditions.

Mautic

Segment

maps to

Mailchimp

Segment (rebuild required)

lossy
Fully supported

Mautic Segments are dynamic contact lists defined by filter rules (field values, tags, behaviors, campaign membership). We export the segment name, description, and full filter definition logic in a written specification document. Mailchimp Segments must be rebuilt manually using Mailchimp's segment builder because the filter condition syntax differs between platforms. The segment membership itself is recalculated at migration time after contacts are in Mailchimp, using the exported filter rules as the rebuild guide.

Mautic

Campaign

maps to

Mailchimp

Campaign (metadata only)

1:1
Fully supported

Mautic Campaigns (automation workflows) and Email Campaigns (single sends) have different structures in Mailchimp. We export campaign metadata: campaign name, send date, subject line, from name, open rate, click rate, bounce rate, and unsubscribe count. This metadata is delivered as a CSV inventory for the customer's reporting records. The campaign automation logic (triggers, conditions, delays, actions) does not transfer to Mailchimp Customer Journeys because the workflow architectures are incompatible. We document each Mautic campaign's automation steps in a written rebuild guide for Mailchimp Customer Journeys.

Mautic

Form

maps to

Mailchimp

Signup Form (rebuild recommended)

1:1
Fully supported

Mautic Forms collect contact data and trigger actions on submission. We export form definitions including field configurations, field types, and submission logic. Mailchimp's embedded signup forms provide a comparable field builder but with different validation rules and styling constraints. We deliver a form field mapping document that pairs each Mautic form field with its Mailchimp equivalent. Form submission actions (adding to a segment, updating a field, triggering a campaign) do not migrate; the customer rebuilds these actions in Mailchimp's form settings or automation triggers.

Mautic

Asset

maps to

Mailchimp

Not Migrated

1:1
Fully supported

Mautic Assets are downloadable files managed within the platform (PDFs, guides, media). Mailchimp does not have a native file asset management system. Asset metadata (file name, URL, description, download count) is exported as a CSV inventory. The files themselves must be migrated separately to a CMS, file hosting service, or Mailchimp's content studio if the customer uses Mailchimp's paid tiers with content storage. We provide the asset inventory and URL mapping during migration but do not migrate binary files as standard scope.

Mautic

Custom Object

maps to

Mailchimp

Not Migrated

1:1
Fully supported

Mautic Custom Objects extend the data model beyond standard contacts and companies, supporting relationships between object types. Mailchimp has no custom object or relationship model; the platform supports only standard subscriber profiles with merge fields. Any Mautic Custom Object records, relationship definitions, and junction table data cannot be migrated to Mailchimp. We export the custom object schema, field definitions, and a sample of records as a CSV deliverable. The customer's admin decides how to handle this data post-migration: it may be stored in an external database, a CRM, or a custom Mailchimp integration.

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.

Mautic logo

Mautic gotchas

High

Mautic v6 CSV export silently fails to deliver files

High

Mautic 4 to 5 upgrade breaks plugins without warning

Medium

MySQL/MariaDB index limits throttle large contact databases

Medium

Custom Object Relationships API is non-functional

Medium

Mautic 5 to 6 migration logs no errors on failure

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

  • Mautic Custom Objects have no Mailchimp equivalent

    Mautic Custom Objects extend the data model with user-defined record types and relationships (one-to-one, one-to-many, many-to-many) between contacts, companies, and custom types. Mailchimp supports only standard subscriber profiles with merge fields. Any custom object records, relationship definitions, and junction table data cannot be imported into Mailchimp. We export the custom object schema and sample records as a CSV deliverable, but the data must be handled outside Mailchimp post-migration (external database, CRM, or custom integration). Migrations that rely on custom object data for segmentation or reporting must plan an alternative data strategy before cutover.

  • Mautic Lead Scoring (Points and Stages) does not transfer

    Mautic's Points system assigns numeric scores to contacts based on behaviors, and Stages define lifecycle positions (Lead, MQL, Customer). Mailchimp has no native lead scoring and no stage lifecycle model. Points values and Stage assignments cannot be migrated to Mailchimp merge fields in a way that enables automated scoring logic. We export point values and stage names as contact merge fields so the data is present for reference, but the customer must rebuild any scoring-based automation in Mailchimp using Customer Journey conditions (email opens, link clicks, purchases) rather than a numeric score.

  • Mautic v6 CSV export silently fails; database extraction required

    In Mautic v6.0.0, the built-in CSV export function queues a file for processing but never delivers it and writes no errors to Apache or Mautic logs. This is a documented bug affecting contact exports. We handle this by accessing the Mautic MySQL/MariaDB database directly with authenticated read access, bypassing the broken export function entirely. This approach is reliable but requires database credentials and read-only database access to the Mautic instance, which some organizations must coordinate with their IT or hosting provider to arrange.

  • Mautic Companies map to flat contact fields in Mailchimp

    Mautic stores Companies as separate records with a many-to-one relationship to Contacts. Mailchimp has no company or account object; company data must be flattened into the contact record as merge fields. This means the Mautic Company record's address, industry, revenue, website, and phone fields all become merge fields on the contact. When a Mautic Contact is associated with multiple Companies, only the primary company transfers. Organizations that rely on Mautic's Company records for reporting or segmentation need to plan how to replicate that structure using Mailchimp tags, segments, or an external CRM integration.

  • Campaign automation logic does not migrate to Customer Journeys

    Mautic Campaigns use a multi-step automation builder with conditions, triggers, delays, and actions across email, SMS, push, and webhook channels. Mailchimp Customer Journeys support trigger-action automation but with narrower conditional logic, no multi-channel SMS or push (Mailchimp SMS is a separate product), and different trigger types. We export campaign definitions and automation steps as a written specification document. The customer rebuilds each campaign in Mailchimp Customer Journeys using that document as the guide. This is a manual rebuild effort that varies significantly in scope depending on the number and complexity of Mautic campaigns.

Migration approach

Six steps for a successful Mautic to Mailchimp data migration

  1. Discovery and data audit

    We audit the source Mautic instance for contact volume, custom contact field count, company records, segments, campaigns, tags, forms, custom objects, assets, and Mautic version. We identify the Mautic export path: direct database access for v6.0.0 instances where the CSV export is broken, or API-based extraction for v4 and v5 instances where the export function is reliable. We also identify any Mautic instances running MySQL/MariaDB with index saturation that may require field archiving before extraction. The discovery output is a written scope document specifying which objects migrate, which export as CSV inventories, and which are non-portable.

  2. Merge field design in Mailchimp

    Before any data moves, we configure the destination Mailchimp Audience's merge fields to match the incoming Mautic contact schema. We map every standard and custom Mautic contact field to a Mailchimp merge field with the appropriate type (text, number, date, address, phone). We also create merge fields for company data (flattened from Mautic Company records) and for any Mautic Points or Stage values that the customer wants preserved as reference data. Merge field setup is done in the Mailchimp Audience settings before migration begins so the import process has a valid target schema.

  3. Contact extraction and deduplication

    We extract contacts from Mautic via direct database query (v6.0.0) or the Mautic REST API in batched requests (v4/v5). We resolve duplicate email addresses by identifying the most recent contact record per email and flagging older records for the customer's review. If the customer has an existing Mailchimp Audience with overlapping subscribers, we coordinate a pre-migration audience cleanup to avoid duplicate member creation. The extracted contact data is transformed to match the Mailchimp merge field schema designed in step 2.

  4. Audience import and reconciliation

    We import contacts into the Mailchimp Audience using the Mailchimp API with batch processing and rate-limit handling. After import, we reconcile record counts against the source Mautic database query output: total contacts imported, contacts skipped (duplicates), tags applied, and any records that failed import due to data validation errors. We fix validation errors (invalid email formats, required field gaps) and reimport. The customer spot-checks 20-30 randomly selected records against the Mautic source for accuracy before the migration is accepted.

  5. Segment and campaign inventory delivery

    We deliver the written inventories: (1) Mautic Segment filter definitions as Mailchimp Segment rebuild specifications, (2) Mautic Campaign automation steps as Mailchimp Customer Journey rebuild guides, (3) Mautic Form field mappings as Mailchimp signup form rebuild references, (4) Mautic Custom Object schema and sample records as a CSV export, and (5) Mautic Asset file inventory with download URLs. These documents are the customer's manual rebuild guide; we do not rebuild segments, journeys, or forms as part of the migration scope.

  6. Cutover and delta sync

    We freeze writes to the source Mautic instance during the cutover window, run a final delta extraction of any contacts modified since the initial extraction, apply those changes to Mailchimp, and then point the sending domain and any integrations to Mailchimp as the active platform. We do not handle DNS changes, sending domain verification, or third-party integration reconfiguration as standard scope. We support a three-day hypercare window for reconciliation issues raised during the first send cycle.

Platform deep dives

Context on both ends of the pair

Mautic logo

Mautic

Source

Strengths

  • Zero per-contact licensing cost with the self-hosted open-source core product.
  • Full source code access enables unlimited customization without vendor dependency.
  • Complete data ownership and infrastructure control for compliance-sensitive organizations.
  • Multi-channel support including email, SMS, mobile push, and web notifications in one platform.
  • Active community and partner ecosystem with implementation support available.

Weaknesses

  • Self-hosted deployment requires ongoing server administration, security updates, and infrastructure costs.
  • MySQL/MariaDB column-size and index-per-table limits constrain large-scale contact databases.
  • Documentation and feature parity across versions is inconsistent, especially for new major releases.
  • CSV export reliability degrades in Mautic v6, and queued export jobs can fail silently without logging errors.
  • Upgrade paths between major versions frequently break third-party plugins and custom code.
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. 1 of 8 objects need a mapping; the rest are 1:1.

B

Overall complexity

Standard migration

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

  • Object compatibility

    B

    1 of 8 objects need a mapping; the rest are 1:1.

  • 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

    Mautic: Not publicly documented — enforced at the server level, not within Mautic software.

  • Data volume sensitivity

    B

    Mautic doesn't expose a bulk API — REST + parallelization used for high-volume runs.

Estimator

Estimate your Mautic 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 Mautic to Mailchimp data migrations

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

Can't find your answer?

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

Book a free 30 minute consultation

Most migrations land between one and two weeks for accounts under 10,000 Contacts with no custom objects, no Points or Stages, and no complex Mautic Segment logic. Migrations with large contact databases (50,000+), multiple Mautic Segments requiring manual rebuild as Mailchimp Segments, company records requiring merge field mapping, or Mautic Campaign history requiring metadata extraction move to two to four weeks because of the reconciliation and rebuild documentation work.

Adjacent paths

Related migrations to explore

Ready when you are

Move from Mautic.
Land in Mailchimp, intact.

Tell us record counts and timeline. We'll come back with a written quote inside 1 business day — no commitment, no sales pitch.

Accuracy guarantee Rollback included Quote in 1 business day