CRM migration
Field-level mapping, validation, and rollback between WORKetc and Mailchimp. We move data and schema; workflows are rebuilt natively in Mailchimp.
WORKetc
Source
Mailchimp
Destination
Compatibility
8 of 9
objects map 1:1 between WORKetc and Mailchimp.
Complexity
BStandard
Timeline
2-3 weeks
Overview
Moving from WORKetc to Mailchimp is a contact-focused migration, not a full CRM replacement. WORKetc bundles CRM, project management, and billing under one flat-rate subscription; Mailchimp is an email marketing and audience platform with CRM-adjacent contact features (audiences, tags, merge fields, basic segmentation). The only meaningful data overlap is Contacts, Companies, Leads, and Custom Fields — everything else in WORKetc (Deals, Projects, Tickets, Invoices, Knowledge Base, Workflows) has no Mailchimp equivalent and migrates as reference data or a separate CSV export. We extract via WORKetc's SOAP API or CSV UI export, deduplicate by email address (Mailchimp's primary key), map lifecycle stages to tags and custom merge fields, and validate against Mailchimp's audience size limits before cutover. Workflows, automations, and billing records do not migrate; we deliver a written reference document for the customer's admin.
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 WORKetc 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.
WORKetc
Contact
Mailchimp
Audience Member
1:1WORKetc Contact records map to Mailchimp Audience members. The Contact's email address is the Mailchimp primary key and dedupe field; we deduplicate on email during the transform phase before any import. Standard fields (First Name, Last Name, Phone, Address) map to Mailchimp's standard merge fields (FNAME, LNAME, PHONE, ADDRESS). The Contact owner assignment does not map — Mailchimp does not have a User-assignment model. Any duplicate email addresses across WORKetc Contacts are resolved by keeping the most recently updated record or merging into a single member with multiple WORKetc source tags.
WORKetc
Company
Mailchimp
Audience Member (company merge field)
1:1WORKetc Company records are parent entities linked to multiple Contacts. Since Mailchimp does not have a Company or Account object, we flatten company data into the Contact-level mapping: the Company name becomes the COMPANY merge field on the linked Audience Member, and the Company phone and address append to the member's address data. If a Contact has no individual address but the parent Company does, we promote the Company address. Company-level custom fields migrate as additional merge fields on the member.
WORKetc
Lead
Mailchimp
Audience Member (segmented by lifecycle)
1:1WORKetc Lead records map to Mailchimp Audience members, typically placed in a 'New Leads' segment or tagged with the WORKetc lead status value. We preserve the Lead's source, status, and conversion flag as Mailchimp tags (e.g., tag: lead_source=Gallery, tag: status=qualified). If the Lead converted to a Contact in WORKetc, the Contact import takes precedence to avoid duplicate records. We do not migrate unconverted Leads that have no email address — Mailchimp requires an email address for Audience members.
WORKetc
Custom Field
Mailchimp
Merge Field
lossyWORKetc custom field definitions and values on Contact, Company, and Lead records map to Mailchimp Merge Fields within the target Audience. We map WORKetc field types to Mailchimp merge field types: text fields to TEXT, date fields to DATE, number fields to NUMBER, and dropdown/multi-select fields to either RADIO or CHECKBOX depending on single versus multi-select. Mailchimp allows up to 40 merge fields per Audience; we flag any migration exceeding this limit and prioritize the most business-critical fields.
WORKetc
Contractor (user type)
Mailchimp
Audience Member (tagged)
1:1WORKetc distinguishes between full Users and Contractor Portal users with different permission scopes. Contractor records without standard email addresses may not be importable to Mailchimp without a valid email. We flag any Contractor records missing an email address and ask the customer whether to exclude them or supply a placeholder email for migration. Contractors who do migrate receive a CONTRACTOR tag in Mailchimp. This separation matters for GDPR and marketing consent contexts.
WORKetc
Deal
Mailchimp
Reference export (CSV)
1:1WORKetc Deals map to Mailchimp as a reference CSV export rather than a live object. Mailchimp has no deal or opportunity tracking. We export Deal records (name, amount, stage, associated Contact, close date) as a separate CSV file delivered alongside the Audience migration. The customer uses this for offline reference or imports it into a separate CRM if needed. Deal stage pipeline names are exported as tags that can be applied to the related Contact if the customer wants to preserve deal context in Mailchimp.
WORKetc
Project
Mailchimp
Reference export (CSV)
1:1WORKetc Projects with their Types, Stages, and weighted progress values have no Mailchimp equivalent. We export Project records as a separate CSV reference file including Project name, stage, progress percentage, associated Company, and associated Contacts. The Project Types and Stages weighted progress system (where each stage carries a custom percentage weight rather than a simple task-completion ratio) is exported with full stage configuration as metadata so the customer can reconstruct progress logic in their project management tool of choice.
WORKetc
Ticket (Support Case)
Mailchimp
Reference export (CSV)
1:1WORKetc support tickets with conversation threads and attachment references export as a separate CSV. Mailchimp does not have a support case or helpdesk object. We export ticket headers (subject, status, priority, linked Contact, linked Company, created date) and deliver the conversation thread content as a separate structured file. The customer admin can import ticket reference data into their helpdesk platform or keep it as an offline archive. Attachment binary files are not migrated unless the destination Mailchimp account has the Content Studio add-on.
WORKetc
Workflow
Mailchimp
Written inventory (no code migration)
1:1WORKetc Workflow rules and automation triggers are not exposed via API and cannot be programmatically extracted. We do not migrate workflows. We deliver a written inventory of every active WORKetc Workflow describing its trigger conditions, actions, and object scope, so the customer's admin can reconstruct the logic in Mailchimp's Customer Journeys or in a dedicated automation tool post-migration. The customer is responsible for rebuilding workflows in Mailchimp Customer Journeys, which uses a different trigger-action model.
| WORKetc | Mailchimp | Compatibility | |
|---|---|---|---|
| Contact | Audience Member1:1 | Fully supported | |
| Company | Audience Member (company merge field)1:1 | Fully supported | |
| Lead | Audience Member (segmented by lifecycle)1:1 | Fully supported | |
| Custom Field | Merge Fieldlossy | Fully supported | |
| Contractor (user type) | Audience Member (tagged)1:1 | Fully supported | |
| Deal | Reference export (CSV)1:1 | Fully supported | |
| Project | Reference export (CSV)1:1 | Fully supported | |
| Ticket (Support Case) | Reference export (CSV)1:1 | Fully supported | |
| Workflow | Written inventory (no code migration)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.
WORKetc gotchas
API access is tier-gated and uses legacy SOAP protocol
Project Types and Stages store weighted progress non-obviously
Contractor portal users are a separate identity class
Stale pricing data on aggregator sites
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 tier audit
We audit the WORKetc account across tier (Starter/Team/Foundations/Enterprise), active objects, and API access. We enumerate all Contacts, Companies, Leads, and Contractor records with email addresses, identify custom field definitions per object, and assess the total unique email count against Mailchimp tier limits. If the customer is on Starter, we confirm whether UI CSV exports cover all needed fields or whether an upgrade to a tier with API access is warranted for the migration. We also identify any Contractor records with non-standard email addresses and flag them for resolution. The discovery output is a written migration scope, an audience size assessment, and a merge field creation list for the customer to pre-provision in Mailchimp before the migration date.
Data extraction and deduplication
We extract contact records from WORKetc via SOAP API (Team tier and above) or CSV UI export (Starter tier). For API-based extraction, we introspect the WSDL for available methods, then pull Contact, Company, Lead, and Contractor records with all standard and custom fields. We resolve the parent-Company relationship for each Contact during extraction. In the transform layer, we run email deduplication using the customer's chosen rule (most recent record wins, or merge with tag), generate a deduplication report showing how many duplicates were resolved, and produce the full contact dataset in Mailchimp-compatible JSON for the API import or CSV for the bulk import path.
Merge field pre-creation in Mailchimp
Before any Audience import, the customer pre-creates the required Merge Fields in their Mailchimp Audience settings based on our merge field creation list from discovery. This includes mapping each WORKetc custom field to a named Merge Field (max 40 per Audience) with the correct type (TEXT, NUMBER, DATE, RADIO, CHECKBOX). We provide the exact field names, types, and descriptions in a setup checklist. If the count of required custom fields exceeds 40, we prioritize the highest-business-value fields and flag the remainder for post-migration manual entry or a secondary Audience.
Sandbox import and validation
We run a test import into a Mailchimp test Audience (or a new audience used as a staging environment) with a representative sample of 10-20% of the full contact set. We validate: merge fields populate correctly, tags apply from WORKetc lifecycle stages and lead sources, duplicate handling produces the expected member count, and addresses format correctly in Mailchimp's standard and non-US address formats. The customer reviews the sandbox Audience and confirms the mapping before we proceed to the production Audience. Any merge field corrections, tag naming changes, or dedupe rule adjustments happen at this stage.
Production Audience migration and reference file delivery
We migrate the full contact dataset to the production Mailchimp Audience using the validated mapping from sandbox. We use Mailchimp's batch API for large imports (over 5,000 members) with rate-limit handling and chunking to stay within the 100-concurrent-requests and 10-requests-per-second API limits. Concurrently, we generate and deliver the reference CSV files: Deals, Projects, Tickets, and Invoices as separate structured exports. We deliver the Workflow and Automation inventory document describing each WORKetc workflow's trigger, conditions, and actions for the admin to rebuild in Mailchimp Customer Journeys.
Cutover, opt-in validation, and deliverability handoff
We verify the final Audience member count against the WORKetc audit total and reconcile any discrepancies. We check that bounced and unsubscribed addresses from WORKetc are imported as suppressed contacts in Mailchimp (not active members) to protect deliverability. We validate Mailchimp domain authentication (SPF and DKIM) is in place for the sending domain. We deliver the migration summary report including member count, merge field coverage, tags applied, and the reference file inventory. We do not handle post-migration Customer Journey rebuild or ongoing email campaign setup; that is the customer's admin scope.
Platform deep dives
WORKetc
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 WORKetc 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
WORKetc: Not publicly documented. WORKetc does not publish per-minute call limits or response headers indicating remaining quota. We confirm acceptable throughput with WORKetc support before running a full historical export..
Data volume sensitivity
WORKetc 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 WORKetc to Mailchimp migration scoping. Not seeing yours? Book a call.
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