CRM migration
Field-level mapping, validation, and rollback between Combit CRM and Mailchimp. We move data and schema; workflows are rebuilt natively in Mailchimp.
Combit CRM
Source
Mailchimp
Destination
Compatibility
3 of 8
objects map 1:1 between Combit CRM and Mailchimp.
Complexity
BStandard
Timeline
2-4 weeks
Overview
Moving from Combit CRM to Mailchimp is a platform-type shift from a full CRM to an email marketing and audience management platform. Combit CRM organizes data around Addresses (Anschriften), Contacts (Kontakte), Companies (Firmen), Projects (Projekte), and Activities (Aktivitäten) with a configurable pipeline model; Mailchimp uses Audiences containing Members with merge fields and tags. We extract Combit data via direct database access for on-premise deployments or structured CSV exports from the cloud version, then map contact records to Mailchimp Members, companies to merge fields or tags, and activity history to custom fields or notes where Mailchimp's data model supports it. Mailchimp automations, campaigns, forms, and reports do not migrate; we deliver a written inventory of these for the customer's marketing team to rebuild in Mailchimp's automation builder.
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 Combit CRM 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.
Combit CRM
Contact (Kontakte)
Mailchimp
Member
1:1Combit CRM Contact records map directly to Mailchimp Members within a target Audience. The contact's email address becomes the Member email, first name and last name map to FNAME and LNAME merge fields, and phone number maps to PHONE. We resolve the Combit contact-to-address link to populate the address merge fields (ADDRESS, CITY, STATE, ZIP, COUNTRY) on the Member record. Any duplicate email addresses across Combit contacts trigger a reconciliation step with the customer before import to avoid Mailchimp's hard bounce policy triggering on re-imports.
Combit CRM
Company (Firmen)
Mailchimp
Merge Field or Tag
lossyCombit CRM Company records have no direct Mailchimp equivalent because Mailchimp does not have a native company or account hierarchy. We map company name to a custom merge field (COMPANY) on the Audience, and company industry or type to a Tag applied to each Member linked to that Company. If the customer needs to track multiple contacts per company, the company name tag approach enables audience segmentation by organization without requiring a separate company object.
Combit CRM
Address (Anschriften)
Mailchimp
Merge Fields (ADDRESS, CITY, STATE, ZIP, COUNTRY)
1:1Combit CRM Address records hold physical location data that maps to Mailchimp's standard address merge field set. We extract the address components (street, city, state/province, postal code, country) from the Address record linked to each Contact and populate the corresponding Mailchimp merge fields on the Member. Mailchimp's address merge field is a compound field; we split the Combit address string into its components during the transform phase.
Combit CRM
Custom Fields (Benutzerdefinierte Felder)
Mailchimp
Merge Fields
lossyCombit CRM user-defined fields across Contact, Company, and Project objects map to Mailchimp merge fields within the target Audience. We identify all custom field definitions during discovery, translate the German field labels to English for Mailchimp merge field names, and map Combit data types to Mailchimp-supported field types (text, number, date, phone, address, birthday, URL, dropdown). Mailchimp allows up to 40 merge fields per audience, which is sufficient for most Combit CRM custom field inventories but requires prioritization if the customer has more than 40 custom fields.
Combit CRM
Tags and Categories (Kategorien)
Mailchimp
Tag
1:1Combit CRM categorical tags on Contact records map to Mailchimp Tags on the corresponding Member. Multi-value tags from Combit (a Contact can have multiple categories) migrate as multiple Tag records in Mailchimp. We consolidate Combit's German-language category labels to English tag names during the transform phase so that Mailchimp's audience segmentation works with the customer's current naming conventions.
Combit CRM
Activity: Email (Aktivitäten)
Mailchimp
Member Note or Merge Field
lossyCombit CRM Activity records of type email do not migrate to Mailchimp as native email activity because Mailchimp tracks campaign-sent email history only. We extract the last meaningful email interaction date from Combit Activity records and populate a custom merge field (LAST_EMAIL_DATE) on the Member. The customer's marketing team decides whether to surface this in audience segments based on recency of last contact.
Combit CRM
Project (Projekte)
Mailchimp
Tag or Merge Field
lossyCombit CRM Projects span multiple contacts and activities but have no direct Mailchimp equivalent. We map project name or project status to a Tag on all Members associated with that Project via the Combit project-to-contact relationship. Alternatively, a PROJECT_NAME merge field can store the associated project identifier for each contact. The customer selects the strategy during scoping based on whether they need to segment by active project membership.
Combit CRM
Deal (Verkäufe/Geschäfte)
Mailchimp
Tag
lossyCombit CRM Deal records track pipeline stages and deal values that do not map to Mailchimp's data model. We extract the current deal stage and deal value and apply a tag (DEAL_STAGE_[stage name]) to the associated Member records. Deal value can also populate a DEAL_VALUE merge field if the customer wants to use deal size as a criterion for audience segmentation or personalization. Pipeline structure itself does not migrate; Mailchimp's automation triggers operate on audience membership and engagement events rather than deal stages.
| Combit CRM | Mailchimp | Compatibility | |
|---|---|---|---|
| Contact (Kontakte) | Member1:1 | Fully supported | |
| Company (Firmen) | Merge Field or Taglossy | Fully supported | |
| Address (Anschriften) | Merge Fields (ADDRESS, CITY, STATE, ZIP, COUNTRY)1:1 | Fully supported | |
| Custom Fields (Benutzerdefinierte Felder) | Merge Fieldslossy | Mapping required | |
| Tags and Categories (Kategorien) | Tag1:1 | Mapping required | |
| Activity: Email (Aktivitäten) | Member Note or Merge Fieldlossy | Fully supported | |
| Project (Projekte) | Tag or Merge Fieldlossy | Fully supported | |
| Deal (Verkäufe/Geschäfte) | Taglossy | 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.
Combit CRM gotchas
No documented REST API for automated migration
German-language interface complicates discovery
On-premise deployments require database-level extraction
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
Discovery and extraction method selection
We audit the Combit CRM deployment to determine whether it is on-premise (requiring database-level extraction) or cloud (using CSV or Excel export). We inventory all object types in use (Contacts, Companies, Addresses, Projects, Activities, Deals, Custom Fields, Tags), count records per object, and identify any German-language field labels requiring translation. We also confirm the Mailchimp audience structure, existing merge fields, and authentication status of the sending domain. The discovery output is a written migration scope, extraction method recommendation, and German-to-English field translation worksheet.
Field mapping and German label translation
We map every Combit CRM field to a Mailchimp destination: Contact fields to Member properties or merge fields, Company fields to merge fields or tags, Address fields to the standard Mailchimp address merge fields, and Custom Fields to merge fields within the 40-field limit. Multi-value tags from Combit map to Mailchimp Tags applied per Member. We translate all German field labels and picklist values to English during this phase and document the translation in the mapping worksheet for validation by a bilingual stakeholder.
Mailchimp audience preparation
We configure the Mailchimp target Audience before any data import: creating the required merge fields (PHONE, COMPANY, any custom merge fields from the mapping), setting tag categories for project and deal-stage tags, and verifying that DKIM and DMARC authentication records are published for the sending domain. If the customer has multiple Combit object types to preserve (Contacts plus Companies), we confirm the tag-naming strategy during this step so that segmentation by organization works in Mailchimp's automation builder.
Data extraction and deduplication
We extract Combit CRM data using the agreed method: direct database queries for on-premise deployments or structured CSV/Excel exports for cloud deployments. During extraction we run deduplication logic on contact email addresses, flagging duplicates for customer resolution before import (Mailchimp's hard bounce policy penalizes re-importing bounced addresses). We also resolve the Combit contact-to-address and contact-to-company relationships at this stage, associating address and company data with each contact record for the Member import.
Transform and Member import
We transform the extracted data into Mailchimp's JSON-based Member format and import into the target Audience using Mailchimp's API with rate-limit handling (100-5,000 requests per minute depending on the customer's Mailchimp tier). Tags are applied in a second pass after Member creation to avoid exceeding Mailchimp's per-call payload limits. We run the import in batches of 500-1,000 Members, reconciling the import count against the Combit source record count after each batch. Custom merge field values that exceed Mailchimp's field length limits are truncated and flagged in the reconciliation report.
Cutover, validation, and handoff
We freeze Combit CRM writes during cutover, run a final delta migration of any records modified during the migration window, and validate the Mailchimp audience against the Combit source record counts. We deliver a written inventory of Combit automations and campaigns that do not migrate, with recommendations for rebuilding equivalent Mailchimp automation journeys. We support a three-day hypercare window where we resolve any data quality issues or merge field gaps identified by the customer's marketing team. Post-migration Mailchimp automation rebuild, campaign design, and form creation are outside standard scope and can be scoped as a separate engagement.
Platform deep dives
Combit CRM
Source
Strengths
Weaknesses
Mailchimp
Destination
Strengths
Weaknesses
Complexity grading
Standard CRM migration. All 8 core objects map 1:1 between Combit CRM and Mailchimp.
Overall complexity
Standard migration
Derived from compatibility, mapping clarity, API constraints, and data volume across Combit CRM and Mailchimp.
Object compatibility
All 8 core objects map 1:1 between Combit CRM 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
Combit CRM: Not publicly documented.
Data volume sensitivity
Combit CRM doesn't expose a bulk API — REST + parallelization used for high-volume runs.
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 Combit CRM to Mailchimp migration scoping. Not seeing yours? Book a call.
Walk through your Combit CRM to Mailchimp migration with a real engineer — 30 minutes, free, written quote within 24 hours.
Book a free 30 minute consultationAdjacent paths
Other ways to leave Combit CRM
Other ways to arrive at Mailchimp
Ready when you are
Tell us record counts and timeline. We'll come back with a written quote inside 1 business day — no commitment, no sales pitch.