CRM migration
Field-level mapping, validation, and rollback between Referrizer and Mailchimp. We move data and schema; workflows are rebuilt natively in Mailchimp.
Referrizer
Source
Mailchimp
Destination
Compatibility
7 of 10
objects map 1:1 between Referrizer and Mailchimp.
Complexity
BStandard
Timeline
1-2 weeks
Overview
Referrizer is a referral-first CRM that bundles SMS, loyalty, reputation management, and email marketing for small multi-location businesses. Mailchimp is an email marketing platform that has narrowed its free tier and raised prices for growing audiences. The migration from Referrizer to Mailchimp is primarily a contact remapping project because Mailchimp's Audience model does not natively support CRM concepts like Deals, Pipelines, Leads, or loyalty point balances. We extract Contacts via Referrizer's paginated API (100 records per page), separate loyalty fields from standard contact properties during transformation, remap loyalty points to Mailchimp merge fields capped at 255 characters, and convert Referrizer labels to Mailchimp tags. We flag Smart Inbox conversational data as non-migratable because no public API exposes it, and we confirm multi-location scoping with the customer before extraction to avoid pulling contacts from all locations into a single audience. Automations, referral reward structures, and loyalty program logic do not migrate; we deliver a written inventory for the customer's admin to rebuild in Mailchimp Customer Journeys.
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 Referrizer 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.
Referrizer
Contact
Mailchimp
Member (Audience)
1:1Referrizer Contacts map directly to Mailchimp Members within a target Audience. The contact's first name, last name, email address, and phone number transfer to the corresponding Mailchimp merge fields (FNAME, LNAME, EMAIL, PHONE). We validate email syntax before import because Mailchimp rejects malformed addresses and removes them from the import batch without partial recovery. Duplicate detection uses email address as the primary key; if a Member with the same email already exists in the Mailchimp audience, we update rather than create.
Referrizer
Custom Fields
Mailchimp
Merge Fields
1:1Referrizer custom fields (key-value properties on contact records) map to Mailchimp merge fields. Mailchimp enforces a 255-character limit on all text merge field values; any Referrizer field containing content longer than 255 characters is truncated at insertion with a flag raised in the reconciliation report. Number fields from Referrizer map to Mailchimp number merge fields without truncation. Date fields map to Mailchimp date merge fields. We enumerate the full custom field schema during discovery by calling GET /contacts and inspecting property names and types before designing the merge field map.
Referrizer
Loyalty Points
Mailchimp
Custom Number Merge Field
lossyReferrizer stores loyalty point balances as numeric custom properties on contact records rather than as a distinct loyalty object. We separate these fields during transformation and create a custom number merge field in Mailchimp (e.g., LOYALTY_PTS) to carry the point balance. Because Mailchimp has no native loyalty program logic, the point value is informational data only. The customer should configure Mailchimp Customer Journeys to trigger based on this merge field if they want programmatic loyalty email behavior, but the logic itself does not migrate.
Referrizer
Labels
Mailchimp
Tags
1:1Referrizer contact labels (e.g., 'VIP', 'gym-member', 'laser-follow-up') transfer to Mailchimp Tags on each Member. Tags are flat string labels in Mailchimp; there is no label hierarchy or category structure as there is in Referrizer. If the customer used nested label groups in Referrizer, we flatten them into combined tags (e.g., 'location-downtown' and 'tier-gold' become two separate tags on the same Member) and document the flattening rule in the handoff report.
Referrizer
Campaign
Mailchimp
Email Campaign or Customer Journey
1:1Referrizer Regular and Automated Campaign records (type, status, configured triggers) transfer as metadata to a campaign inventory document rather than as executable code. Mailchimp's Customer Journey builder is a different automation model with trigger types, conditions, and delay actions that do not have a direct mapping from Referrizer campaign logic. We document each Referrizer campaign's trigger, audience, and scheduled sends so the customer's admin can recreate equivalent Customer Journeys in Mailchimp.
Referrizer
Offer
Mailchimp
Custom Merge Fields or Notes
lossyReferrizer Offers (promotional codes, reward structures, referral link associations) are not a Mailchimp-native object. We extract offer codes, reward amounts, and referral link URLs as text custom merge fields on the relevant Contact records. The customer recreates offer logic in Mailchimp by building Customer Journeys that reference these stored values. We do not migrate referral relationship graphs (who referred whom) as a distinct structure; we store the referring contact's email as a merge field on the referred contact if that relationship exists in Referrizer's data model.
Referrizer
Review Request
Mailchimp
Custom Merge Fields
1:1Referrizer's review request history (which contacts received requests, when, and to which platform) is stored as activity on the contact object. We extract the last review request date, the platform requested (Google, Yelp, Facebook), and the request status as custom merge fields in Mailchimp. This preserves a record of review outreach but does not replicate the automated review request workflow; the customer rebuilds that automation in Mailchimp using Customer Journeys if needed.
Referrizer
Smart Inbox Messages
Mailchimp
Not migratable
1:1Referrizer's Smart Inbox stores conversational threads between contacts and the business, but no documented public API endpoint exposes this data. Only campaign-level sent/delivered metrics are accessible via the Reports API. We explicitly confirm with the customer during scoping whether inbox conversational history is critical. If it is, we recommend manual export of any required message threads from the Referrizer UI before the migration date. We cannot migrate Smart Inbox data programmatically and flag this as a data loss item in the discovery report.
Referrizer
Pipeline / Lead Stages
Mailchimp
Not applicable in Mailchimp
1:1Referrizer's Pipeline and lead management features have no Mailchimp equivalent. Mailchimp is an email marketing platform, not a CRM with deal tracking. Pipeline stages, deal values, and lead status do not map to Mailchimp objects. We do not migrate pipeline data. If the customer needs pipeline tracking, they should evaluate a CRM alongside Mailchimp post-migration. We document the pipeline stage distribution from Referrizer in the handoff report so the customer can assess whether a separate CRM is needed.
Referrizer
Location (Multi-location)
Mailchimp
Audience or Merge Field
lossyReferrizer's multi-location model associates contacts with specific business locations. We scope extraction by location account ID during the extract phase to prevent cross-contamination. In Mailchimp, location can be preserved either as separate Audiences (one per location) or as a single Audience with a location-identifier merge field on each Member. We confirm the preferred strategy with the customer during scoping. If separate Audiences are chosen, we create a Mailchimp Audience per location and map contacts accordingly; if a single Audience is chosen, we add a LOCATION merge field to each contact during import.
| Referrizer | Mailchimp | Compatibility | |
|---|---|---|---|
| Contact | Member (Audience)1:1 | Fully supported | |
| Custom Fields | Merge Fields1:1 | Mapping required | |
| Loyalty Points | Custom Number Merge Fieldlossy | Fully supported | |
| Labels | Tags1:1 | Fully supported | |
| Campaign | Email Campaign or Customer Journey1:1 | Fully supported | |
| Offer | Custom Merge Fields or Noteslossy | Fully supported | |
| Review Request | Custom Merge Fields1:1 | Fully supported | |
| Smart Inbox Messages | Not migratable1:1 | Not supported | |
| Pipeline / Lead Stages | Not applicable in Mailchimp1:1 | Fully supported | |
| Location (Multi-location) | Audience or Merge Fieldlossy | 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.
Referrizer gotchas
No bulk export API — migration relies on Zapier or CSV
Smart Inbox conversations are not accessible via API
Loyalty points stored as contact properties, not a distinct object
Rate limits not publicly documented
Multi-location scoping required to avoid cross-contamination
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 scoping
We audit the Referrizer account to enumerate all contact properties, custom field names and types, label sets, location accounts, and active campaign types. We use the paginated GET /contacts endpoint to pull a full contact export and stitch pages together into a single dataset. We confirm multi-location scoping requirements with the customer (separate Audiences per location or single Audience with location merge field) and identify any custom fields expected to exceed Mailchimp's 255-character merge field limit. We also confirm whether Smart Inbox conversational data needs to be preserved manually and whether loyalty point balances should be transferred as merge fields.
Mailchimp audience and merge field setup
We create the target Mailchimp Audience (or multiple Audiences if the multi-location strategy requires it) and configure the merge fields based on the discovered Referrizer schema. For each custom field in Referrizer, we create a corresponding Mailchimp merge field with the appropriate type (text, number, date, or address). We reserve the LOCATION merge field for location-identifier strategy if a single audience is used. We validate the merge field setup in a test import before the full migration to catch any type mismatches early.
Transformation and loyalty field separation
We separate Referrizer loyalty point fields from standard contact properties during the transformation phase. Loyalty fields are routed to custom number merge fields in Mailchimp. Standard contact fields (name, email, phone, address, custom properties) are mapped to their corresponding Mailchimp merge fields. Labels are converted to Mailchimp tags. Any field value exceeding 255 characters is truncated and flagged. Review request history is extracted as date and text fields and mapped to custom merge fields. Pipeline stages, deal data, and lead status are excluded and documented in the handoff report.
Test import and reconciliation
We run a test import of a representative sample (typically 100-500 records) into the target Mailchimp audience and reconcile field counts, merge field values, and tag assignments against the Referrizer source data. We validate email deliverability by confirming that Mailchimp's import result report shows no syntax errors or unexpected duplicates. Any truncation events, unmapped fields, or import errors are resolved before the full production import. This step also validates that the customer's Mailchimp account has sufficient contact capacity under their current plan.
Production import and delta migration
We run the full contact import into the production Mailchimp audience. Contacts are inserted in batches to respect Mailchimp's import rate limits. Duplicate contacts (identified by email) are updated rather than created. After the initial import, we run a delta migration to capture any contacts modified in Referrizer during the migration window. Tags are applied post-import to avoid re-processing the full contact set for tag assignments. We deliver a row-count reconciliation report comparing Referrizer source totals to Mailchimp imported totals.
Handoff and automation rebuild inventory
We deliver the migration handoff document, which includes a complete list of Referrizer campaigns, automated campaign triggers, referral offer codes and reward structures, loyalty program rules, and review request workflow configurations. Smart Inbox data loss is documented as a signed-off item if the customer confirmed no manual export was needed. We do not rebuild Referrizer automations, referral programs, or loyalty logic as Mailchimp Customer Journeys; that work is handled by the customer's admin or a Mailchimp implementation partner. We provide a one-week reconciliation window to address any data issues identified after the first send.
Platform deep dives
Referrizer
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 Referrizer 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
Referrizer: Not publicly documented; API returns 429 TOO_MANY_REQUESTS on overages.
Data volume sensitivity
Referrizer 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 Referrizer to Mailchimp migration scoping. Not seeing yours? Book a call.
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