CRM migration
Field-level mapping, validation, and rollback between Lime CRM and Mailchimp. We move data and schema; workflows are rebuilt natively in Mailchimp.
Lime CRM
Source
Mailchimp
Destination
Compatibility
4 of 9
objects map 1:1 between Lime CRM and Mailchimp.
Complexity
BStandard
Timeline
2-4 weeks
Overview
Lime CRM and Mailchimp are architecturally different platforms, and migrating between them requires acknowledging that Mailchimp is an email marketing platform, not a full CRM. We migrate Lime CRM Contacts to Mailchimp Subscribers, preserving email addresses, names, phone numbers, and custom field values as Mailchimp merge fields or tags. We map Lime CRM Tags to Mailchimp Tags and use Tags to represent Company and Deal context that has no direct Mailchimp equivalent. Lime CRM Deals, Companies (as separate objects), Activities, Tickets, and Custom Limetypes do not map 1:1 into Mailchimp; we deliver a written inventory of these records with recommendations for archiving, exporting to CSV, or rebuilding in a parallel CRM. Workflow Automations, no-code automation rules, and Lime CRM's GDPR-portal exports are documented but not transferred as code. The result is a Mailchimp audience that preserves your contact identities and segmentation history while requiring post-migration admin work to rebuild pipeline tracking, activity logging, and any custom object logic.
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 Lime 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.
Lime CRM
Contact
Mailchimp
Subscriber (in Audience)
1:1Lime CRM Contacts map directly to Mailchimp Subscribers. We extract first name, last name, email address, phone number, and all custom field values from the Lime CRM Contact record. Email address becomes the Subscriber hash for Mailchimp's audience identity. Custom Lime CRM fields map to Mailchimp merge fields (FNAME, LNAME, PHONE, and any custom field name) or to Tags if the field represents a categorical value rather than a scalar attribute. Contacts without a valid email address are flagged in the reconciliation report and held for the customer's admin to resolve before audience import.
Lime CRM
Tag
Mailchimp
Tag
1:1Lime CRM Tags on Contacts map directly to Mailchimp Tags on the corresponding Subscriber. We preserve the full tag taxonomy from Lime CRM as a flat tag list per Subscriber. If the customer's Lime CRM uses a hierarchical tag structure (for example, a Region prefix and a Role suffix), we either preserve the full concatenated tag or work with the customer's admin during scoping to decide on a flattened naming convention that Mailchimp's tag UI can manage effectively.
Lime CRM
Company
Mailchimp
Tag or Merge Field
1:1Lime CRM Companies are not a native Mailchimp object, so we resolve the Company reference on each Contact and inject it as a Mailchimp Tag (for example, Tag = CompanyAcmeCorp) or as a merge field (COMPANY = 'Acme Corp') depending on whether the customer wants to use company data for audience segmentation. We flag this decision during scoping because tag-based segmentation performs differently from merge-field filtering in Mailchimp Customer Journeys. If the customer has more than 50 unique Companies, we recommend using a merge field rather than creating 50+ individual tags.
Lime CRM
Deal
Mailchimp
CSV Archive
lossyMailchimp has no deal, opportunity, or pipeline object, so Lime CRM Deals cannot be migrated as live records. We export Deals to a structured CSV archive (Deal name, stage, value, owner, expected close date, company, contact) and deliver it alongside the Mailchimp audience migration. The customer's admin can import this CSV into a separate CRM, a spreadsheet, or use it to rebuild pipeline context in a parallel Lime CRM instance. We do not attempt to represent Deal stage as a Mailchimp tag because the tag limit per subscriber (applied at scale) becomes operationally unmanageable.
Lime CRM
Activity
Mailchimp
CSV Archive
lossyLime CRM Activities (calls, emails, meetings, tasks, notes) linked to Contacts have no Mailchimp equivalent. Campaign activity (opens, clicks, bounces, unsubscribes) is owned by Mailchimp and does not need migration. We export Activities to a structured CSV archive (activity type, timestamp, subject, linked contact email, owner) and deliver it as a separate file. The customer's admin can import this into a separate CRM or a data warehouse. Note that Lime CRM exports email conversations as individual message files rather than threaded records, so we reassemble them by sender and timestamp before generating the activity archive.
Lime CRM
Ticket
Mailchimp
CSV Archive
lossyLime CRM Tickets represent support or service records with status, priority, assignee, and conversation history. Mailchimp does not have a service desk or ticket object. We export Tickets to a structured CSV archive (ticket ID, subject, status, priority, assignee, contact email, created date, last modified date) and deliver it alongside the audience migration. If the customer uses a separate helpdesk (Zendesk, Freshdesk, HubSpot Service Hub), we can recommend a CSV import pattern for that platform.
Lime CRM
Custom Object (Limetype)
Mailchimp
Tag, Merge Field, or CSV Archive
lossyLime CRM Custom Limetypes (configurable objects specific to the customer's industry variant) have no direct Mailchimp equivalent. We analyse each active Limetype during scoping, assess whether any of its fields map to subscriber attributes or tags, and apply one of three strategies: scalar fields become Mailchimp merge fields, categorical fields become Tags, and relational or transactional Limetypes become a separate CSV archive. We document every Limetype in the migration scope so the customer's admin knows which custom data exists and where it lives post-migration.
Lime CRM
Attachment
Mailchimp
CSV Reference
lossyLime CRM Attachments linked to Contacts (documents, files, images) do not migrate into Mailchimp because Mailchimp does not store file attachments per subscriber. We generate a CSV reference file listing each attachment (filename, Lime CRM record ID, linked contact email, file size, upload date) with a recommendation to store files in a cloud storage platform (Google Drive, SharePoint, Dropbox) and link to them from the CSV. For migrations where the customer has fewer than 500 attachments, we can package them as a zip archive and deliver it alongside the Mailchimp audience export.
Lime CRM
User / Owner
Mailchimp
N/A (not migrated)
1:1Lime CRM Users and Deal Owners do not map to Mailchimp because Mailchimp does not have a user management or ownership model equivalent to a CRM. We resolve Owner email addresses from Lime CRM during scoping to validate owner-to-contact relationships, and we flag which Contacts had a specific owner so the customer can recreate that context in Mailchimp (for example, via Tags like Owner_Jane_Doe or a separate CRM). The owner data does not appear in the Mailchimp subscriber record itself.
| Lime CRM | Mailchimp | Compatibility | |
|---|---|---|---|
| Contact | Subscriber (in Audience)1:1 | Fully supported | |
| Tag | Tag1:1 | Fully supported | |
| Company | Tag or Merge Field1:1 | Fully supported | |
| Deal | CSV Archivelossy | Fully supported | |
| Activity | CSV Archivelossy | Fully supported | |
| Ticket | CSV Archivelossy | Fully supported | |
| Custom Object (Limetype) | Tag, Merge Field, or CSV Archivelossy | Fully supported | |
| Attachment | CSV Referencelossy | Fully supported | |
| User / Owner | N/A (not migrated)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.
Lime CRM gotchas
Email threads export as individual message files
Super API-key generation removed from API
Custom Limetype schema is customer-unique
No bulk export for attachments in base tier
Workflow Automations do not export in transferable format
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 schema extraction
We audit the Lime CRM instance to extract the live schema, including all active Limetypes, custom fields, tag taxonomies, and object relationships. We extract a list of all Contacts with their linked Company, Owner, Tags, and any custom field values. We document active Workflow Automations by taking screenshots and notes from the Lime CRM UI. We identify any attachments associated with Contact records and estimate total file count and size. The discovery output is a written migration scope with a complete object inventory, a decision brief on how to handle Deals, Activities, Tickets, and Custom Limetypes (migrate to Mailchimp as tags/merge fields or archive to CSV), and a Lime CRM API credential request submitted through Lime Technologies' account management. Discovery typically takes 5-10 business days, including the API key acquisition window.
Contact and tag mapping design
We design the Mailchimp audience schema based on the discovery output. Standard Contact fields (first name, last name, email, phone) map to Mailchimp's standard subscriber fields. Lime CRM custom fields map to Mailchimp merge fields, with field type conversion (date fields become text, multi-select becomes pipe-separated text). Lime CRM Tags map directly to Mailchimp Tags. Company references on Contacts are resolved and mapped to either a Tag or a merge field based on the customer's segmentation needs identified during scoping. We generate a field mapping document for the customer's review before any export begins.
Data export and deduplication
We export all Contact records from Lime CRM via the API with batched retrieval and integrity validation against the export manifest. We run a deduplication pass on email addresses (the Mailchimp subscriber hash) to flag duplicate contacts for the customer's admin to resolve before import. Phone numbers are normalised to prevent leading-zero stripping that commonly occurs in CSV exports. Tags are extracted as a flat list per Contact. The export produces a contact CSV, a tag reference file, and a company reference file for the mapping step.
Mailchimp audience creation and import
We create the destination Mailchimp Audience with the agreed merge field schema. Contacts are imported via Mailchimp's bulk import API with the subscriber hash computed from each email address. Tags are applied per contact during or after import. We validate the import by matching record counts between the Lime CRM export manifest and the Mailchimp audience subscriber count, and we spot-check 25-50 records for field-level accuracy. Any import errors (invalid email formats, duplicate hashes, missing required fields) are logged and resolved in a correction pass before the audience is marked complete.
Archive generation and handoff
We generate the CSV archives for Deals, Activities, Tickets, and any Custom Limetypes that could not be mapped to Mailchimp subscriber attributes or tags. Each archive includes the primary record fields, linked contact email (for cross-referencing with the Mailchimp audience), and a schema description. We deliver the archives alongside the confirmed Mailchimp audience. We deliver the Workflow Automation inventory document describing each Lime CRM automation rule. We provide a written recommendations document for the customer's admin covering next steps: rebuilding pipeline tracking in a separate CRM, rebuilding automations in Mailchimp Customer Journeys, and integrating Mailchimp with any downstream CRM used for sales or service.
Platform deep dives
Lime CRM
Source
Strengths
Weaknesses
Mailchimp
Destination
Strengths
Weaknesses
Complexity grading
Standard CRM migration. All 8 core objects map 1:1 between Lime CRM and Mailchimp.
Overall complexity
Standard migration
Derived from compatibility, mapping clarity, API constraints, and data volume across Lime CRM and Mailchimp.
Object compatibility
All 8 core objects map 1:1 between Lime 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
Lime CRM: Not publicly documented.
Data volume sensitivity
Lime 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
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