CRM migration
Field-level mapping, validation, and rollback between Apollo ERP and HubSpot. We move data and schema; workflows are rebuilt natively in HubSpot.
Apollo ERP
Source
HubSpot
Destination
Compatibility
15 of 15
objects map 1:1 between Apollo ERP and HubSpot.
Complexity
BStandard
Timeline
2–4 weeks
Overview
Apollo.io is a sales intelligence and prospecting platform built around contact and account enrichment, sequences for outbound email automation, and a deal tracker. HubSpot is a full CRM that manages the complete customer lifecycle — contacts, companies, deals, support tickets, and custom objects — with its own automation, reporting, and inbound tools. Migrating from Apollo.io to HubSpot means shifting from a data-enrichment layer sitting atop a CRM into a native CRM where enrichment, pipeline management, and customer lifecycle tracking live in one place. FlitStack AI extracts Apollo.io contacts, accounts, opportunities, and custom fields via the Apollo REST API, maps them to HubSpot CRM objects, and handles field-level value transformations for deal stages, industry pick-lists, and custom field types. We preserve original create timestamps, owner assignments, and activity history (calls, emails, meetings, notes) as HubSpot engagements. Apollo sequences and engagement metrics tied to Apollo's email infrastructure (open rates, reply rates, sender reputation) do not migrate — those require a rebuild in HubSpot's workflow and email tools. Apollo's enrichment engine can overwrite HubSpot edits during sync, which we address with data-writing rules configured before migration. The migration uses HubSpot's Imports API for bulk structured loads and CRM APIs for field-level validation. All standard and custom objects migrate within HubSpot's stated rate limits and monthly processing quotas. Complex migrations with 50+ custom fields or multi-value pick-lists land in the upper pricing tier.
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 Apollo ERP object lands in HubSpot, including any object-level transformations, lookup resolution, or schema-design dependencies.
Typical mapping — final map is confirmed during the sample migration step.
Apollo ERP
Contact
HubSpot
Contact
1:1Apollo contact maps 1:1 to HubSpot contact. All standard properties (name, email, phone, title, address) migrate as HubSpot native fields. Records without email are flagged and excluded — HubSpot enforces one email per contact, and there is no override or bulk exception for this requirement.
Apollo ERP
Account
HubSpot
Company
1:1Apollo account maps to HubSpot company. Company name, domain, industry, employee count, annual revenue, and founded year migrate as native HubSpot company properties. Industry values require pick-list alignment — Apollo industry values not in HubSpot's default list are added as custom pick-list values before migration runs.
Apollo ERP
Opportunity
HubSpot
Deal
1:1Apollo opportunity maps to HubSpot deal. Deal name, amount, stage, close date, owner, and pipeline migrate. Deal stage is a HubSpot deal-stage pick-list value scoped to the specific pipeline — each Apollo stage value requires explicit value mapping before migration runs.
Apollo ERP
Custom Contact Field
HubSpot
Contact (custom property)
1:1Apollo custom contact fields (string, number, date, boolean) migrate to HubSpot custom properties on the contact object. Each custom field is created in HubSpot before migration runs, using the same field type as the Apollo source. Type mismatches are flagged for admin review.
Apollo ERP
Custom Account Field
HubSpot
Company (custom property)
1:1Apollo custom account fields map to HubSpot custom properties on the company object. Field type (string, number, date, boolean) is preserved exactly. Multi-select or pick-list fields require value alignment between Apollo's options and HubSpot's pick-list values before migration.
Apollo ERP
Custom Opportunity Field
HubSpot
Deal (custom property)
1:1Apollo custom opportunity fields migrate to HubSpot deal custom properties. Number and date fields migrate cleanly. Pick-list fields require value mapping — stage-probability or forecast-category fields from Apollo need HubSpot equivalents created before migration.
Apollo ERP
Email Activity
HubSpot
Engagement (email log)
1:1Apollo email logs migrate as HubSpot engagement records with type 'email'. Original send timestamp, sender, recipient, and subject line are preserved. Open rates, click rates, and reply rates tied to Apollo's sending infrastructure do not transfer — those metrics belong to Apollo's email engine.
Apollo ERP
Call Activity
HubSpot
Engagement (call log)
1:1Apollo call records migrate as HubSpot engagements with type 'call'. Call duration, direction (inbound/outbound), outcome, and original timestamp are preserved. Call recording URLs stored in Apollo custom fields migrate as HubSpot custom properties — the audio files are not rehosted automatically.
Apollo ERP
Note
HubSpot
Engagement (note)
1:1Apollo notes migrate as HubSpot engagement notes. Original author, timestamp, and note body are preserved. Notes attached to specific contacts, accounts, or opportunities are linked to the corresponding HubSpot record by unique identifier.
Apollo ERP
Sequence
HubSpot
HubSpot Workflow (manual rebuild)
1:1Apollo sequences have no native HubSpot equivalent and cannot be migrated directly. FlitStack exports complete sequence definitions — including step timing, email templates, step conditions, and personalization tokens — as a structured rebuild reference for HubSpot Automation workflows. Each sequence must be manually rebuilt in HubSpot using the exported definitions.
Apollo ERP
Contact–Account Association
HubSpot
Contact–Company Association
1:1Apollo contacts linked to accounts migrate with the primary account reference preserved. HubSpot associates contacts with companies via the company association on the contact record. Multiple-account contacts from Apollo are linked to the primary account only — secondary associations are documented in a gap report.
Apollo ERP
Contact–Opportunity Association
HubSpot
Deal–Contact Association
1:1Apollo contacts linked to opportunities migrate as deal-contact associations in HubSpot. The association is preserved by matching contact email and opportunity ID. Contacts without email are excluded from migration, and this breaks the association for those records.
Apollo ERP
Apollo Owner
HubSpot
HubSpot User
1:1Apollo owner records (sales rep, SDR) resolve to HubSpot users by email address match. Unmatched owners are flagged before migration — the team either invites the user to HubSpot first or assigns records to a designated fallback owner. No record lands without a valid HubSpot owner.
Apollo ERP
LinkedIn URL / Intent Signal
HubSpot
Custom Property (reference field)
1:1Apollo's enrichment data — LinkedIn profile URL, buyer intent signals, technology stack — has no native HubSpot equivalent. These migrate as custom properties on the contact record, preserved for reference but not surfaced in HubSpot's standard UI without custom card setup.
Apollo ERP
Apollo hs_lead_status
HubSpot
Contact lifecyclestage
1:1If Apollo stores lead status as a custom field, it maps to HubSpot's lifecyclestage property. Value mapping is required — Apollo's custom status labels must be matched to HubSpot's standard lifecycle stage values or added as a separate custom pick-list.
| Apollo ERP | HubSpot | Compatibility | |
|---|---|---|---|
| Contact | Contact1:1 | Fully supported | |
| Account | Company1:1 | Fully supported | |
| Opportunity | Deal1:1 | Fully supported | |
| Custom Contact Field | Contact (custom property)1:1 | Fully supported | |
| Custom Account Field | Company (custom property)1:1 | Fully supported | |
| Custom Opportunity Field | Deal (custom property)1:1 | Fully supported | |
| Email Activity | Engagement (email log)1:1 | Fully supported | |
| Call Activity | Engagement (call log)1:1 | Fully supported | |
| Note | Engagement (note)1:1 | Fully supported | |
| Sequence | HubSpot Workflow (manual rebuild)1:1 | Fully supported | |
| Contact–Account Association | Contact–Company Association1:1 | Fully supported | |
| Contact–Opportunity Association | Deal–Contact Association1:1 | Fully supported | |
| Apollo Owner | HubSpot User1:1 | Fully supported | |
| LinkedIn URL / Intent Signal | Custom Property (reference field)1:1 | Fully supported | |
| Apollo hs_lead_status | Contact lifecyclestage1:1 | 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.
Apollo ERP gotchas
Leave balance carry-forward errors on year-end migration
Chart of Accounts mapping requires manual chart design review
API rate limits throttle bulk export on lower-tier plans
HubSpot gotchas
Marketing Contacts billing model is migration-critical
Feature tier gating is not visible until onboarding
Mandatory onboarding fees inflate year-one cost
HubSpot CSV importer cannot migrate engagements or attachments
Custom objects require Enterprise and a pre-existing schema
Pair-specific challenges
Migration approach
Audit Apollo data and identify migration scope
FlitStack extracts a complete inventory of Apollo contacts, accounts, opportunities, custom fields, and activity records via the Apollo REST API. We map all field names and data types, identify the activity volume (emails, calls, meetings, notes), and assess deal stage value counts. This audit reveals the record counts that drive pricing, the custom field count that determines mapping complexity, and any data quality issues — particularly contacts without email addresses that will fail HubSpot's import requirements. The audit output is a migration scope document you review before any data movement begins.
Configure Apollo–HubSpot field mapping and data-writing rules
We create a detailed field mapping document that pairs every Apollo field with its HubSpot equivalent — specifying which fields are direct maps, which require value mapping (industry, deal stage), and which require HubSpot custom properties to be created. For the Apollo–HubSpot integration specifically, we configure data-writing rules that determine whether Apollo enrichment overwrites HubSpot fields or leaves existing values intact. We set enrichment-target fields to 'do not overwrite' for any field your team maintains in HubSpot, and we configure the 6-hour configuration window settings so the sync rules are locked before auto-sync activates.
Create HubSpot custom properties and align pick-list values
Before migration runs, FlitStack creates all required HubSpot custom properties for fields that have no native HubSpot equivalent — custom string, number, date, and boolean properties on contacts, companies, and deals. For industry pick-list fields, we export Apollo's industry values and add them as HubSpot pick-list options so the migration can write industry data without validation errors. For deal stages, we align Apollo's stage names with HubSpot's pipeline stage values. This step requires a HubSpot admin to approve property creation — we deliver the complete property specification so your admin can review and approve in bulk.
Validate field mapping with a test batch before full migration
A representative slice of Apollo records — typically 200–500 records spanning contacts, accounts, deals, and activity — migrates to a HubSpot staging environment or a separate test portal. We validate that all mapped fields appear correctly in HubSpot, that company associations resolve properly, that deal stages map to the correct pipeline values, and that activity history attaches to the right records. Contacts without email addresses appear in the error log confirming they were skipped. The test run reveals any field mapping gaps or pick-list mismatches before the full migration commits, giving your team a chance to adjust the mapping plan.
Execute full migration and monitor HubSpot API rate limits
The full migration runs against HubSpot using the Imports API for bulk structured loads and CRM APIs for field-level validation. FlitStack monitors HubSpot's API rate limits — the Exports API and CRM APIs each have documented limits that affect how fast large record sets can ingest. Large activity-history imports are batched to avoid hitting quota limits mid-run. We track the number of records loaded, errors encountered, and skipped records (contacts without email, unmatched owners). Because Apollo's deal and activity sync can add a 15-minute to 24-hour lag even after API completion, we monitor HubSpot's processing queue for up to 24 hours after the last API call.
Delta-pickup window and final reconciliation audit
A delta-pickup window (24–48 hours) captures any Apollo records created or modified during the migration and cutover period — your team keeps working in Apollo during this time and those changes sync to HubSpot. After the delta window closes, FlitStack delivers a reconciliation audit comparing Apollo record counts to HubSpot record counts by object type, flagging any remaining gaps. Contacts skipped due to missing email, and any records where owner resolution failed, appear in a separate gap report with recommended actions. The audit log is available for 48 hours post-migration in case a rollback is needed.
Platform deep dives
Apollo ERP
Source
Strengths
Weaknesses
HubSpot
Destination
Strengths
Weaknesses
Complexity grading
Standard CRM migration. 2 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 Apollo ERP and HubSpot.
Object compatibility
2 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
Apollo ERP: Not applicable..
Data volume sensitivity
Apollo ERP 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
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Category
FAQ
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