CRM migration

Migrate from LeadSimple to Twenty CRM

Field-level mapping, validation, and rollback between LeadSimple and Twenty CRM. We move data and schema; workflows are rebuilt natively in Twenty CRM.

LeadSimple logo

LeadSimple

Source

Twenty CRM

Destination

Twenty CRM logo

Compatibility

93%

13 of 14

objects map 1:1 between LeadSimple and Twenty CRM.

Complexity

CModerate

Timeline

48–72 hours

Rollback included Accuracy guarantee Field-level validation

Overview

What this migration involves

LeadSimple is a property management CRM with pipeline-driven lead tracking, process automation, and VoIP integration built for property managers. Twenty CRM is a modern open-source CRM that stores contacts as People, organizations as Companies, and deals as Opportunities with a flexible data model supporting unlimited custom fields. The two platforms share a pipeline-stage concept but diverge significantly in object naming, field conventions, and how property-specific data (Property Type, Occupancy, Annual Contract Value, Number of Units) is stored. FlitStack AI reads LeadSimple via its API and CSV export endpoints, extracts leads with their pipeline stage and property associations, maps contact and company records to Twenty People and Companies, and loads property data as Opportunities with type-aware custom fields. Activity history (calls, emails, texts) requires separate API calls per record since LeadSimple's bulk export omits activities. Workflows, processes, and process custom fields are documented for rebuild in Twenty's workflow builder. The migration runs against Twenty's REST and GraphQL API with bulk operations for large datasets and a delta-pickup window capturing in-flight changes during cutover.

Field-level fidelity

Every standard and custom field arrives verified.

Schema-aware mapping

AI proposes the map; you confirm before any record moves.

Relationships preserved

Parent–child, lookups, and ownership stay linked.

Full activity history

Calls, emails, meetings — with original timestamps.

Attachments & notes

Documents, uploads, and inline notes move with the record.

Why teams make this switch

Two sides of the same decision

Leaving

LeadSimple logo

LeadSimple

What's pushing teams away

  • Email reliability issues — users report errors after sending or closing emails, requiring page reloads and disrupting daily communication workflows.
  • Integration gaps with other property management software, particularly around two-way sync with tools like AppFolio and Buildium, create manual re-entry work.
  • Limited feature set compared to full property management platforms — some customers find themselves supplementing LeadSimple with additional tools, increasing complexity.
  • Workflow complexity for large portfolios — the automation and process layers can become difficult to maintain as the number of doors and nested workflows grows.

Choosing

Twenty CRM logo

Twenty CRM

What's pulling them in

  • Top open-source CRM on GitHub with 40.6K stars, giving teams full source code access and infrastructure ownership without per-feature licensing surprises.
  • Free self-hosting under AGPL-3.0 means unlimited users and custom objects for the cost of cloud infrastructure alone, typically $20–100/month.
  • Pricing page explicitly mocks competitors for charging add-on fees for API access, webhooks, and workflows — transparency that resonates with RevOps teams burned by Salesforce.
  • Unlimited custom objects and fields with no price impact, letting teams shape the data model to their business rather than forcing business into rigid schemas.
  • Modern TypeScript/React/PostgreSQL stack means developer-led teams can extend, self-host, or integrate without fighting legacy architecture.

Object mapping

How LeadSimple objects map to Twenty CRM

Each row shows how a LeadSimple object lands in Twenty CRM, including any object-level transformations, lookup resolution, or schema-design dependencies.

Typical mapping — final map is confirmed during the sample migration step.

LeadSimple

Lead (LeadSimple Pipeline Record)

maps to

Twenty CRM

Person + Opportunity

1:many
Fully supported

LeadSimple leads bundle contact info, property details, and deal stage into one record. FlitStack AI splits this into a Twenty Person record for the contact fields and an Opportunity record for the property data and pipeline stage. The Opportunity links back to the Person via the opportunities array. This preserves the lead's identity and deal value in the correct Twenty objects.

LeadSimple

Lead Name (contact full name)

maps to

Twenty CRM

Person.name

1:1
Fully supported

LeadSimple's Lead Name field holds the full contact name. Twenty Person requires a name object with firstName and lastName or a displayName. FlitStack parses the full name, splitting on the first space; names without a space land in firstName with lastName blank. Original Lead Name preserved in a custom text field for reference.

LeadSimple

Email Address

maps to

Twenty CRM

Person.email

1:1
Fully supported

LeadSimple email maps directly to Twenty Person email field. Email serves as the unique identifier for Person-to-Person deduplication and for resolving workspace member relations during import. Bounced or invalid emails flagged in a custom field for post-migration cleaning. Teams should verify email deliverability status in LeadSimple before migration to ensure active addresses transfer cleanly without bounced-flag overrides.

LeadSimple

Combined Phone Numbers

maps to

Twenty CRM

Person.phone + Person.phone (additional)

1:1
Fully supported

LeadSimple's Combined Phone Numbers concatenates multiple phone types into one field. FlitStack parses and splits by type label (Cell, Work, Home) into Twenty Person.phone primary and phone (additional) fields. If parsing fails, the full string lands in phone with a warning flag.

LeadSimple

Property Type

maps to

Twenty CRM

Opportunity.customPropertyType

1:1
Fully supported

Property Type (e.g., Single Family, Multi Family, Commercial) has no Twenty native equivalent. FlitStack creates a custom pick-list field (customPropertyType__c) on Opportunity, populates with LeadSimple's values, and maps the pick-list options during migration. Teams must configure field visibility in Twenty's data model settings.

LeadSimple

Annual Contract Value

maps to

Twenty CRM

Opportunity.amount

1:1
Fully supported

LeadSimple Annual Contract Value maps directly to Twenty Opportunity.amount as a currency field. This is the primary deal-value field in Twenty's pipeline view. Values preserved as-is; null ACV records land with amount = 0 and a note flagging the missing value.

LeadSimple

Pipeline Stage

maps to

Twenty CRM

Opportunity.stage

1:1
Fully supported

LeadSimple Pipeline Name and Stage Name combine into a stage value. FlitStack maps stage names to Twenty Opportunity.stage pick-list values. New stage options created in Twenty's data model to match LeadSimple's exact stage names before import. Stage probabilities re-applied from LeadSimple stage configuration as custom number fields.

LeadSimple

Tag List

maps to

Twenty CRM

Person.customTags + Opportunity.customTags

1:1
Fully supported

LeadSimple Tag List is a comma-separated string per lead. FlitStack creates a custom text array field (customTags__c) on both Person and Opportunity, populating with LeadSimple's exact tags. Tag filtering in Twenty's view builder lets teams replicate LeadSimple's tag-based segmentation. Multi-value tags are preserved as array elements with original casing intact for accurate reporting.

LeadSimple

Assigned To (Owner)

maps to

Twenty CRM

Person.workspaceMember + Opportunity.workspaceMember

1:1
Fully supported

LeadSimple Assigned To references a user. FlitStack resolves by email match against Twenty workspace members. Unmatched owners flagged before migration; teams either invite them to Twenty first or assign to a fallback workspace member. The workspace member relation links the Person and Opportunity to the correct Twenty user.

LeadSimple

Source Name + Referrer Name

maps to

Twenty CRM

Person.customSource + Opportunity.customSource

1:1
Fully supported

LeadSimple tracks lead Source and Referrer as separate fields. FlitStack creates custom text fields on Opportunity (customSource__c, customReferrer__c) and populates from the export. These drive source reporting in Twenty's pipeline views and can be used for lead attribution analysis. Teams should audit source and referrer field values during discovery to identify all unique values that need corresponding pick-list options or custom field configurations in Twenty.

LeadSimple

Company (if linked in LeadSimple)

maps to

Twenty CRM

Company

1:1
Fully supported

LeadSimple lead records sometimes link to a Company object. When present, the Company maps directly to a Twenty Company record. The Person links to the Company via Person.companyId. Companies without contacts land as standalone records for future association. During migration, FlitStack validates that all LeadSimple company IDs have corresponding records and flags any orphaned references for manual resolution before the People import begins.

LeadSimple

Occupancy

maps to

Twenty CRM

Opportunity.customOccupancy

1:1
Fully supported

Occupancy field (e.g., Occupied, Vacant, Under Renovation) has no native Twenty equivalent. FlitStack creates a custom pick-list field (customOccupancy__c) on Opportunity with values matching LeadSimple's pick-list. This drives vacancy-rate reporting in Twenty's pipeline dashboards. Teams should audit all LeadSimple occupancy values during discovery to ensure all active statuses transfer and unused values are excluded from the pick-list configuration to keep the field clean.

LeadSimple

Number of Units

maps to

Twenty CRM

Opportunity.customUnits

1:1
Fully supported

Number of Units per property record maps to a custom integer field (customUnits__c) on Opportunity. This is critical for property managers tracking portfolio size per deal. Values preserved as integers; null values flagged for manual review post-migration. Teams should verify unit counts in LeadSimple before migration to ensure data accuracy and identify any non-numeric values requiring normalization during the import process.

LeadSimple

Cost

maps to

Twenty CRM

Opportunity.customCost

1:1
Fully supported

LeadSimple Cost field (likely property management cost or deal cost) maps to a custom currency field (customCost__c) on Opportunity. FlitStack preserves the decimal precision and currency label. Teams use this for margin analysis in Twenty reporting. Currency formatting should be verified during test migration to ensure consistent display across all records and alignment with team preferences for regional number formats.

Gotchas + challenges

What specifically takes care here

Platform-specific issues from each side, plus the pair-specific challenges that don't show up on either platform's page on its own.

LeadSimple logo

LeadSimple gotchas

High

Notes and Activities excluded from bulk CSV export

High

No public API — migration requires workaround

Medium

Contact-level custom fields can vary per owner on the same property

Medium

Per-door pricing on Operations layer is a billing artifact not migratable

Medium

Workflow automation must be manually rebuilt on the destination

Twenty CRM logo

Twenty CRM gotchas

High

Import order is enforced and critical

High

Export limited to 20,000 records and visible columns only

Medium

Soft-deleted records count toward uniqueness and trigger restores

Medium

API rate limits cap at 200 req/min on Organization tier

Low

No native email sequences — follow-up cadences require external tools

Pair-specific challenges

  • Activity history excluded from LeadSimple bulk export requires per-record API calls

    LeadSimple's bulk export (Export Leads button) returns 24 fields — contact info, property details, stage, and tags — but omits calls, emails, texts, and notes entirely. Activity history exists in LeadSimple and is accessible via per-record API calls, but a migration tool using only the bulk export will drop every activity. FlitStack AI reads the bulk export for records and supplemental API calls for activity logs, mapping call dispositions to Twenty Task.type, emails to Task records, and texts to Note attachments with a custom activityType__c field. This doubles the API call volume for large datasets and requires LeadSimple API credentials with read access to activity endpoints. Teams should verify their LeadSimple plan includes API access before scheduling the migration.

  • Twenty requires custom fields pre-created before CSV import — fields are not auto-generated

    Twenty's CSV import creates records but not fields. If customPropertyType__c, customOccupancy__c, customUnits__c, customTags__c, customSource__c, or customCost__c don't exist in Settings → Data Model before import, Twenty will silently drop those columns. This is documented in Twenty's own migration guide: 'Fields must exist before import. The CSV import creates records, not fields.' FlitStack AI delivers a field-creation checklist as part of the migration plan, specifying field type (pick-list, text, number, currency), required flags, and pick-list values for each custom field. Teams must create fields in Twenty's Data Model settings before the test migration runs.

  • LeadSimple process custom fields don't export in bulk — process automation data requires manual audit

    LeadSimple stores process custom fields (lease renewal flags, property inspection data, make-ready indicators) as conditional-logic fields tied to process types. The bulk lead export does not include process custom field values. These fields exist per-process-instance in LeadSimple and must be retrieved via the LeadSimple API per record or via a separate process export. FlitStack AI audits the full process field schema during discovery, identifies which process fields are active (in use on records, not just defined), and migrates them as custom fields on Twenty Opportunity or as separate custom objects if the process structure is complex. Unused or archived process fields are excluded from migration and documented for manual review.

  • LeadSimple VoIP call logs and SMS history require separate export with telephony integration data

    LeadSimple's shared inbox includes VoIP call logs and SMS history linked to contacts and leads. These are stored as activity records tied to the telephony integration (not as standard CRM activities). The bulk export does not include telephony activity. FlitStack AI retrieves call logs via LeadSimple's telephony API endpoints where available, mapping call duration, disposition, and timestamp to Twenty Task records with type='Call' and custom call metadata fields. SMS history maps to Note records with a custom activityType__c = 'SMS' flag. If the LeadSimple telephony integration logs are inaccessible via API, the migration plan documents this gap and teams can export call reports manually from LeadSimple's telephony dashboard.

  • Twenty CSV import order is strict: Companies before People before Opportunities

    Twenty's import system requires referential integrity: a Person with a companyId must have the Company record already present in Twenty. Importing People before Companies results in failed relations and orphaned Person records with blank companyId. LeadSimple's export returns leads with property data but Company records separately. FlitStack AI sequences the migration as: (1) Companies, (2) People with Person-Company links, (3) Opportunities with Opportunity-Company and Opportunity-Person links, (4) Tasks linked to the imported records. The import runs in four staged CSV loads with validation between each stage to confirm record counts before proceeding. This prevents the circular-dependency errors that occur when Opportunity import runs before Person and Company import.

Migration approach

Six steps for a successful LeadSimple to Twenty CRM data migration

  1. Audit LeadSimple data and build field mapping plan

    FlitStack AI connects to LeadSimple via API and exports all leads, contacts, companies, and process records. We review the full schema, identify active custom fields, and audit activity history availability. The result is a field mapping document that specifies every source field, its Twenty destination (standard or custom), mapping type (direct, value-mapping, custom-field-required), and any transformation logic. Custom field definitions (type, pick-list values, required flags) are documented for Twenty-side creation before import begins.

  2. Create Twenty custom fields and configure data model

    Before data moves, your team creates the custom fields in Twenty (Settings → Data Model): customPropertyType__c (pick-list), customOccupancy__c (pick-list), customUnits__c (integer), customCost__c (currency), customTags__c (text array), customSource__c (text), customReferrer__c (text), customStageStatus__c (text). FlitStack delivers an exact step-by-step checklist with field names, types, and pick-list values. Companies are created or imported first so Person-to-Company relations resolve correctly when People records land. Workspace members are invited and confirmed active so owner resolution works on day one.

  3. Run test migration with field-level diff

    A representative slice of 200–500 records migrates first: leads spanning multiple stages, records with and without property data, records with tags, and records owned by users likely to need email resolution. FlitStack generates a field-level diff comparing source and destination values for every mapped field. You verify that property types, occupancy values, ACV amounts, and stage names appear correctly in Twenty. Owner resolution is validated — any unmatched owners are flagged with the original LeadSimple owner name and email so your team can invite them to Twenty or assign a fallback. Activity supplemental imports (calls, emails, texts) are tested for a sample of records.

  4. Full migration with delta-pickup window

    The complete LeadSimple dataset migrates: Companies → People → Opportunities → Tasks in sequence. A delta-pickup window (typically 24–48 hours) runs after the full load, capturing any records created or modified in LeadSimple during the cutover. All operations are logged in FlitStack's audit trail with source record ID, destination record ID, field counts, and error details. One-click rollback reverts all migrated records if reconciliation fails. Post-migration, FlitStack delivers a reconciliation report showing record counts by object, unmatched owners, dropped activities, and any custom field values that failed validation.

  5. Workflow and process rebuild handoff

    LeadSimple workflows, process automation templates, and conditional logic are documented as a rebuild reference package. FlitStack exports workflow definitions (triggers, conditions, actions, stage-change rules) in a structured format. Your Twenty admin uses this to rebuild equivalent automations in Twenty's workflow builder. The rebuild package covers process types, autopilot rules, and any conditional field logic tied to property data. FlitStack does not migrate workflows — they require manual rebuild in Twenty due to fundamental differences in trigger and action architecture between the two platforms.

Platform deep dives

Context on both ends of the pair

LeadSimple logo

LeadSimple

Source

Strengths

  • Specialized for property management with native property, unit, and process concepts rather than generic sales objects.
  • Shared inbox bundles phone, email, and SMS with pooled usage, replacing separate VOIP and messaging tools.
  • Workflow automation built for real estate events like renewals, delinquencies, and make-readies.
  • Per-door pricing on Operations scales predictably with portfolio growth, not headcount.
  • 14-day free trial and guided onboarding with a dedicated success manager on higher tiers.

Weaknesses

  • No publicly documented API — migration depends on CSV export, which excludes Activities and Notes.
  • Email reliability issues reported by multiple users, with errors after sending or closing messages.
  • Limited integrations compared to larger property management platforms; two-way sync gaps reported.
  • Workflow rebuild required on destination — automation does not transfer in any migration scenario.
  • Small review sample size (~22 verified reviews on G2) makes it difficult to fully assess long-term reliability.
Twenty CRM logo

Twenty CRM

Destination

Strengths

  • AGPL-3.0 open-source license with full source code on GitHub — no vendor lock-in, no sunset risk.
  • Unlimited users and unlimited custom objects on self-hosted, with no feature gating based on headcount.
  • REST and GraphQL APIs available on all paid tiers, not locked behind an enterprise add-on fee.
  • MCP server and webhooks shipped as standard features, not premium upgrades.
  • Modern PostgreSQL-backed data model that developer teams can query, extend, and self-host.

Weaknesses

  • Recent v1.0 release means limited production hardening compared to CRMs with multi-year operational track records.
  • No native email sequencing or sales engagement tools — follow-up cadences require a separate platform.
  • No native two-way email sync or inbox integration, requiring third-party connectors for full activity logging.
  • Self-hosting 'free' pricing hides real infrastructure and DevOps costs that stack up over time.
  • Workflow automation is functional but lacks the complexity needed for sophisticated multi-step sales motions.

Complexity grading

How hard is this migration?

Moderate CRM migration. 1 of 8 objects need a manual workaround.

C

Overall complexity

Moderate migration

Derived from compatibility, mapping clarity, API constraints, and data volume across LeadSimple and Twenty CRM.

  • Object compatibility

    C

    1 of 8 objects need a manual workaround.

  • Field mapping clarity

    C

    Field mapping is derived from defaults — final spec confirmed during the sample migration.

  • Timeline complexity

    B

    8-object category — typical timelines run 2–7 days end-to-end.

  • API constraints

    B

    LeadSimple: Not publicly documented.

  • Data volume sensitivity

    B

    LeadSimple doesn't expose a bulk API — REST + parallelization used for high-volume runs.

Estimator

Estimate your LeadSimple to Twenty CRM migration cost

Rule-based pricing — no per-record fees, no manual quotes. Migrations over 2M records are scoped individually.

Step 1

What are you migrating?

Pick a category, then your source and destination platforms.

Category

FAQ

Frequently asked questions about LeadSimple to Twenty CRM data migrations

Answers to the questions buyers ask most during LeadSimple to Twenty CRM migration scoping. Not seeing yours? Book a call.

Can't find your answer?

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Most LeadSimple-to-Twenty CRM migrations complete in 48–72 hours of clock time for datasets under 50,000 records. Larger setups with 50,000–200,000 leads, active process custom fields, or extensive activity history extend to 5–10 days. The longest planning step is creating Twenty's custom fields (Property Type, Occupancy, Annual Contract Value, etc.) before import, which your team handles in Twenty's Data Model settings. FlitStack sequences the migration (Companies → People → Opportunities) and runs a delta-pickup window after the full load to capture in-flight changes.

Adjacent paths

Related migrations to explore

Ready when you are

Move from LeadSimple.
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