How to Migrate from Zoho to HubSpot Without Losing Data or Automations

In Brief: Migrating from Zoho CRM to HubSpot means moving your core records (contacts, companies, deals, leads) through HubSpot's native Data Sync app, plus rebuilding everything that app doesn't touch: email history, file attachments, Deluge scripts, workflow rules, and blueprints. A realistic migration runs through discovery, data audit, field and module mapping, a custom build to close the email and file gap, a parallel run, and 60-90 days of adoption tracking. The biggest risk isn't the CRM data moving cleanly - it's assuming the native sync app covers everything, when it only covers four object types.

Businesses usually start looking at HubSpot for one of two reasons: Zoho CRM's interface and automation start feeling dated as record volumes and team size grow, or the business needs marketing, service, and reporting depth that Zoho can't match natively without stitching together separate Zoho One apps. Both are valid triggers. Neither makes the migration itself a drag-and-drop job.

Most guides describe this migration as "connect the two systems and let the sync run." HubSpot does publish a native Zoho CRM integration, and it genuinely works for what it covers. The problem is scope: it covers four object types with two-way sync. Everything else - most importantly your email history and file attachments - has to be built separately, and that's the part that determines your real timeline.

HubSpot builds and maintains its own "Data Sync" app for Zoho CRM, available directly on the HubSpot Marketplace. It's a real two-way sync, not a one-time import: records created or updated in either platform are shared with the other, historical data syncs on connection, and default field mappings are ready out of the box. Custom field mappings need a Data Hub Starter subscription or above; if your Zoho instance uses custom modules with no HubSpot equivalent, those need custom objects built first, which requires an Enterprise-tier HubSpot subscription.

Here's what that native sync app moves, and what it leaves behind:

Covered natively	Needs custom work
Contacts	Email history / logged emails
Companies / Accounts	File attachments & notes
Deals	Deluge scripts, workflows, blueprints
Leads	Zoho One apps: Books, Desk, Campaigns, Analytics

The native sync app is scoped to structured CRM objects that map cleanly onto HubSpot properties: fields with defined types, sitting on a Contact, Company, or Deal record. Zoho's Emails module and file attachments don't fit that model in the same way, so they're excluded from the default sync entirely - not partially migrated, not queued for later, simply left in Zoho.

In practice, closing that gap means custom development: pulling email and attachment records from the Zoho API and pushing them into HubSpot as logged engagements and file records via HubSpot's Engagements and Files APIs, matched back to the correct contact, company, or deal. This is also where you set policy rather than just plumbing - deciding whether to backfill full historical email threads or migrate records going forward only significantly changes both scope and cost, and it's a decision worth making deliberately rather than defaulting into.

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If your business runs Zoho CRM as a standalone tool, skip this section. If you run it inside Zoho One - alongside Zoho Books, Zoho Desk, Zoho Campaigns, or Zoho Analytics - it applies directly. We ran into the same pattern on the Salesforce side of the fence in our guide to migrating Zoho to Salesforce - the ecosystem problem doesn't care which CRM you're moving to.

Migrating Zoho CRM to HubSpot doesn't migrate the rest of Zoho One with it. Every connection those other tools had into CRM data has to be handled deliberately: Zoho Campaigns' email lists and engagement history typically get rebuilt inside HubSpot's own Marketing Hub rather than reconnected, Zoho Desk's ticket history and workflows map toward HubSpot's Service Hub, and Zoho Analytics dashboards need to be reconstructed against the new data model rather than pointed at a shrinking CRM. Teams that treat this as a CRM-only project are the ones who find out weeks later that support has lost customer context or that finance can't reconcile invoices against accounts.

Before migration, map every system connected to Zoho CRM, not just the CRM data itself, and decide for each one whether it gets rebuilt in HubSpot, replaced with a HubSpot-native tool, or left running with a clearly owned integration.

Zoho's Deluge scripts, workflow rules, and blueprints have no direct import path into HubSpot. There's no tool that reads a Deluge function and produces a working HubSpot workflow. Each piece of logic has to be identified and rebuilt by hand, usually inside HubSpot's native Workflows tool, with anything genuinely too complex for point-and-click logic handled through custom code on Operations Hub.

This is consistently the most underestimated part of the timeline. A Zoho instance that looks simple on the data side can carry years of accumulated Deluge customisation behind it. Audit every workflow rule and custom function before committing to a go-live date - that audit, not the data export, should set your schedule. This is the same discipline we apply to any CRM migration where custom fields and logic are easy to underestimate.

A migration that holds up after go-live generally runs through six phases:

1. Discovery and audit. Document every Zoho module, workflow rule, Deluge function, and connected app, whether that's standalone Zoho CRM or the wider Zoho One suite.

2. Data audit and deduplication. Clean and dedupe before records move, not after. Migrating duplicate or inconsistent records into HubSpot just gives the same problem a new home, and it's far harder to fix once workflows are running against dirty data.

3. Field and module mapping. Map Zoho fields and modules to HubSpot properties and custom objects, and confirm which HubSpot tier your custom-field and custom-object needs actually require: Free CRM for default fields, Data Hub Starter for custom field mappings, Enterprise if Zoho custom modules need matching custom objects.

4. Custom build for email and file history. The development phase most guides skip: syncing or backfilling email activity and attachments through the Zoho and HubSpot APIs, decided upfront as either a full historical backfill or a going-forward-only sync.

"The email and file gap is where most Zoho-to-HubSpot timelines quietly double. It isn't hard work, but it's work nobody scopes for until they've already promised a go-live date," says Antonio Karneluti, CTO of Loncom Consulting.

5. Parallel run. Run Zoho and HubSpot side by side for one to two weeks before full cutover. This surfaces mapping errors and automation gaps while there's still a working system to fall back on.

6. Cutover, training and adoption tracking. Once parallel testing confirms the data and automations hold up, cut over fully, train the team on where their old Zoho habits map to new HubSpot ones, and track login frequency, record completeness, and report usage for the first 30-60-90 days.

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It depends far more on automation complexity and the email/file gap than on record volume. A lean Zoho instance with light customisation can move in a few weeks. An instance with years of Deluge scripting, multiple Zoho One dependencies, and a full historical email backfill can take a few months once the custom build and parallel run are included.

No. HubSpot's Data Sync app for Zoho CRM covers Contacts, Companies, Deals, and Leads with two-way sync and default field mappings. It does not sync email history, file attachments, or Zoho's automation logic - those require separate work.

Email history and file attachments are the two biggest gaps, since HubSpot's native sync app doesn't touch either. Deluge scripts, workflow rules, and blueprints also fall outside the sync app and have to be manually rebuilt as HubSpot workflows or Operations Hub code.

No. There's no automated path from Zoho's Deluge scripts, workflow rules, or blueprints into HubSpot. Each has to be reviewed and rebuilt by hand, which is why an automation audit should happen before a migration timeline is finalised.

Yes. A one-to-two-week parallel run, with both systems live and being compared, is the most reliable way to catch mapping errors and sync gaps before they become the new system's problem.

Yes. Loncom handles Zoho to HubSpot migrations end-to-end, including the parts most agencies leave out: the custom development for email and file history, rebuilding Deluge scripts and workflow rules natively in HubSpot, and planning for Zoho One dependencies like Books, Desk, and Campaigns. Book a free consultation to get a scoped timeline for your instance.