CRM migration
Field-level mapping, validation, and rollback between Cronberry and Mailchimp. We move data and schema; workflows are rebuilt natively in Mailchimp.
Cronberry
Source
Mailchimp
Destination
Compatibility
6 of 9
objects map 1:1 between Cronberry and Mailchimp.
Complexity
BStandard
Timeline
2-4 weeks
Overview
Moving from Cronberry to Mailchimp is a lateral platform move that requires careful data extraction because Cronberry has no publicly documented REST API. We coordinate with Cronberry support to obtain structured CSV or JSON exports of Contacts, Segments, Campaigns, and Templates, then map those into Mailchimp's Audience structure with merge tags replacing Cronberry's custom field model. Cronberry's multi-channel configuration (SMS, Push, WhatsApp) has no Mailchimp equivalent; we flag these records and recommend a separate SMS platform for teams that depend on text messaging. Smart Segments built from field-value conditions in Cronberry must be reverse-engineered from contact membership data because the rule logic does not export. We document the implied conditions for your team to rebuild in Mailchimp's native segment builder. Cronberry's behavioral event logs map to Mailchimp's activity history only partially, since Mailchimp tracks opens and clicks automatically on sent campaigns rather than storing arbitrary event types. We do not migrate Landing Pages, Forms (as rendered assets), or Workflows; these require manual rebuild in Mailchimp.
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 Cronberry 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.
Cronberry
Contact
Mailchimp
Audience Member
1:1Cronberry Contact records with name, email, phone, and custom field values map directly to Mailchimp Audience members. We map Cronberry's field names to Mailchimp merge tags (EMAIL, FNAME, LNAME, PHONE, and up to 29 custom merge fields on Standard, 79 on Premium). We run deduplication against the pre-migration report before import, matching on email as the primary key and phone as secondary, and we import duplicates as suppressed records in Mailchimp rather than active audience members.
Cronberry
Contact Tag
Mailchimp
Tag
1:1Cronberry's tag associations on Contacts map to Mailchimp Tags. Tags preserve segmentation context across both platforms. We extract the full tag list from Cronberry's export and create matching Tags in the destination Audience before contact import, then assign tags during the contact insert phase using Mailchimp's tag-add endpoint in batches to respect API rate limits.
Cronberry
Smart Segment
Mailchimp
Segment (manual rebuild required)
lossyCronberry Smart Segments are defined by conditional rules against contact field values, but the rule logic does not export as reusable schema. We reverse-engineer segment membership by querying which contacts belong to each segment, documenting the conditions implied by the contact data (field values, tag presence, date ranges). Your team rebuilds these conditions in Mailchimp's Segment builder using AND/OR logic on merge field values and tag membership. We deliver a segment map as part of the migration package.
Cronberry
Campaign
Mailchimp
Campaign
1:1Cronberry Campaigns (Email channel only) map to Mailchimp Campaigns. We extract campaign name, subject line, sender info, send time, and audience assignment. Campaign content (HTML body, images) maps to Mailchimp's template content block. Cronberry campaigns using SMS, Push, or WhatsApp channels are flagged as non-migratable because Mailchimp does not support these channels natively. We deliver a channel-specific gap report identifying which campaigns cannot move and recommending alternatives.
Cronberry
Email Template
Mailchimp
Template
1:1Cronberry Email Templates with personalization variables map to Mailchimp Templates. We extract template HTML content, inline CSS, images, and variable placeholders, then reconstruct them in Mailchimp's template format. Rich formatting may require minor adjustment due to differences in CSS inlining between platforms. SMS and Push templates have no Mailchimp equivalent and are excluded from migration with a written note in the template inventory.
Cronberry
User / Agent
Mailchimp
Team Member
1:1Cronberry User and Agent records map to Mailchimp Team Members. We extract user email addresses and role names (Admin, Manager, Agent). Mailchimp's permission model uses Audience access levels rather than Cronberry's role structure, so we assign migrated users as Audience Managers or Account Admins based on their original access level. Mailchimp's free plan supports 1 user; Standard and Premium support multiple team members.
Cronberry
Form (Drag-and-Drop Builder)
Mailchimp
Signup Form
lossyCronberry Form definitions including field structure, conditional logic, and submission targets are extractable as schema. We map Cronberry form fields to Mailchimp merge tags and document the form's structure so your team can recreate the form in Mailchimp's signup form builder. Visual layout, drag-and-drop positioning, and conditional field rules cannot be preserved and require manual rebuild in Mailchimp's Form builder.
Cronberry
Event Log / Behavioral Tracking
Mailchimp
Activity History (partial)
1:1Cronberry's behavioral event logs (opens, clicks, push interactions, custom event types) map partially to Mailchimp's activity history. Mailchimp automatically tracks opens and clicks on sent campaigns for email channels, but it does not store arbitrary custom event types that Cronberry may have captured (e.g., form submissions, cart events, push interactions). We migrate behavioral events that match Mailchimp's tracked types (Email Open, Email Click) and flag custom event types as non-migratable in the event inventory. We do not migrate push notification events because Mailchimp does not support push channels.
Cronberry
Company / Account
Mailchimp
Company Merge Field or Ignored
many:1Cronberry Company records map to a company_name custom merge field on the Mailchimp Audience member rather than a separate object. Mailchimp does not have a native Companies/Accounts object at the email marketing tier. If your Cronberry implementation stores company-level data as a separate object with related Contacts, we flatten it by merging the primary company name and any key company fields into custom merge tags on the Contact record. We document the original company schema for reference.
| Cronberry | Mailchimp | Compatibility | |
|---|---|---|---|
| Contact | Audience Member1:1 | Fully supported | |
| Contact Tag | Tag1:1 | Fully supported | |
| Smart Segment | Segment (manual rebuild required)lossy | Fully supported | |
| Campaign | Campaign1:1 | Fully supported | |
| Email Template | Template1:1 | Fully supported | |
| User / Agent | Team Member1:1 | Fully supported | |
| Form (Drag-and-Drop Builder) | Signup Formlossy | Fully supported | |
| Event Log / Behavioral Tracking | Activity History (partial)1:1 | Fully supported | |
| Company / Account | Company Merge Field or Ignoredmany: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.
Cronberry gotchas
No documented public API for bulk export
UI overhaul shipped without training or documentation
Smart Segment logic cannot be exported directly
Repeat-contact detection produces duplicate records
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
Export coordination with Cronberry
We initiate the data export by contacting Cronberry support or coordinating with their technical team to obtain structured CSV or JSON exports of Contacts, Companies, Segments, Campaigns, Templates, Users, and Forms. If direct database access is available, we extract directly. We define the export schema during discovery, requesting all standard fields plus any active custom fields identified in the Cronberry UI. Export coordination typically takes 3-7 business days and is the critical path item before any migration work begins. We cannot begin data transformation until export files are received.
Data audit, deduplication, and field inventory
We audit the exported data for completeness, consistency, and duplication. This includes running the deduplication report (matching on email, phone, and name), flagging probable duplicate records, auditing custom field usage (field count vs active field count), identifying which Cronberry channels (email, SMS, push, WhatsApp) have data, and inventorying Smart Segment membership. We deliver a pre-migration data quality report with recommendations for field consolidation, duplicate handling, and non-migratable records before transformation begins. Your team approves the deduplication strategy and field consolidation decisions.
Destination schema design and merge tag mapping
We design the Mailchimp Audience schema before import. This includes creating custom merge tags for every migrated Cronberry custom field, mapping Cronberry field types to Mailchimp merge tag types (text, number, date, phone, address, dropdown), creating Tags in Mailchimp for each unique Cronberry tag value, and creating Segments in Mailchimp (empty, as the logic is documented for manual rebuild). We check the merge tag count against your Mailchimp plan tier and present a consolidation recommendation if the field count exceeds plan limits. Mailchimp Premium is recommended if your Cronberry data requires more than 30 custom merge fields.
Contact and company migration
We migrate Contacts first using Mailchimp's bulk API endpoint with batching to respect rate limits. We apply the deduplication strategy (primary record per unique contact, duplicates suppressed), assign Tags during import using the batch tag-add endpoint, and map company data to the company_name custom merge field. We run a reconciliation report comparing exported Cronberry contact count to imported Mailchimp subscriber count and investigate any gaps before proceeding. After contact migration, we migrate Company records by flattening them into merge fields on the related contact records.
Campaign, template, and user migration
We migrate email Campaigns by extracting subject line, sender info, send time, and HTML content, then creating matching Campaigns in Mailchimp with the migrated Audience and a copy of the email body content. We migrate Email Templates by creating new Templates in Mailchimp and populating them with extracted HTML and merge tag placeholders. SMS, Push, and WhatsApp templates are excluded and listed in the channel gap report. We migrate Users by creating Team Members in Mailchimp with roles mapped from Cronberry's access levels. Forms are documented as schema only, with visual layout excluded from migration.
Validation, cutover, and handoff
We run a final reconciliation comparing record counts across all object types, spot-check 25-50 records against the Cronberry source data, and verify tag assignment and merge tag population. We freeze Cronberry writes during the cutover window and run a delta migration of any records modified during the window. We deliver the Segment map (with reverse-engineered conditions for each Smart Segment), the channel gap report (non-migratable SMS/Push/WhatsApp content), and the form schema inventory. We do not rebuild Cronberry Workflows in Mailchimp; those are documented for your team to rebuild in Mailchimp's Customer Journey builder. We offer a one-week hypercare window for reconciliation issues raised during the first send.
Platform deep dives
Cronberry
Source
Strengths
Weaknesses
Mailchimp
Destination
Strengths
Weaknesses
Complexity grading
Standard CRM migration. 1 of 8 objects need a mapping; the rest are 1:1.
Overall complexity
Standard migration
Derived from compatibility, mapping clarity, API constraints, and data volume across Cronberry and Mailchimp.
Object compatibility
1 of 8 objects need a mapping; the rest are 1:1.
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
Cronberry: Not publicly documented..
Data volume sensitivity
Cronberry 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 Cronberry to Mailchimp migration scoping. Not seeing yours? Book a call.
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