Attio to HubSpot
Attio is a flexible, API-first CRM with customizable objects, lists, workflows and email/calendar sync.
Attio data can move into HubSpot, landing mainly in Sales Hub. 2 of 9 mapped objects move directly (People and Companies); 5 items need manual work and 3 do not move. Plan roughly 1-2 weeks for a small move and 6-12 weeks for a large one.
Migration checklist for Attio
Three phases, specific to this system. Tick steps off as you go.
Before
0 of 5 doneDuring
0 of 5 doneAfter
0 of 5 doneWhat will it take?
No price list: cost follows volume, custom objects and how much logic must be rebuilt. Answer four quick questions for a planning range.
The three scenarios
Small migration
<10k records
CSV import of people, companies and deals.
Mid migration
10k-100k records
API extraction for notes and tasks, plus list remapping.
Large migration
>100k records with custom objects
Heavy association work, delta loads and workflow rebuilds.
What moves the number
Timeline ranges are planning estimates, not a quote. A partner confirms scope after discovery.
Access, mapping and limits
Start with how data leaves Attio: what you need to get in, what lands in HubSpot, and what will not.
REST (JSON over HTTPS) with webhooks; an OpenAPI spec is published
An API token with scopes enabled for each object read; new tokens start with no scopes.
Workspace admin access to generate tokens (Settings → Developers); the exact role is not confirmed.
100 read and 25 write requests per second across the API. List records and List entries also have score-based limits in a 10-second sliding window. Exceeding a limit returns HTTP 429 with a Retry-After header.
Choose your route
How will you move the data?
No native connector was found.
- You need: An API token with scopes enabled for each object read; new tokens start with no scopes.
- Permission: Workspace admin access to generate tokens (Settings → Developers); the exact role is not confirmed.
Native imports often bring over only some data, so check coverage per object in the mapping below.
Export each object, clean it, then import it into HubSpot.
- CSV/Excel export of a view (only visible columns are exported)
- REST API extraction with limit/offset pagination (default 500)
- Third-party exports such as Google Sheets scripts
Limits: 100 read and 25 write requests per second across the API. List records and List entries also have score-based limits in a 10-second sliding window. Exceeding a limit returns HTTP 429 with a Retry-After header.
Migration and sync tools can move more than a plain import. Confirm which objects each one supports before you choose.
Best when volume is high, custom objects are many or automation is heavy. That is the Large scenario: 6-12 weeks, usually phased.
Talk to a partnerWhere each object lands
In Attio
In HubSpot
Hover or tap anything on the left to see where it lands.
| Source object | In HubSpot | Moves | Notes |
|---|---|---|---|
| People | Contacts | yes | Export by CSV or API; Attio record IDs should be kept in a custom property. |
| Companies | Companies | yes | Parent-child relationships are reported to be reconstructable by vendors; confirm this in a test. |
| Deals (with stage/status) | Deals | partial | Attio deal statuses must be mapped to HubSpot pipeline stages. A third-party vendor says this can be automated. |
| Notes | Notes | partial | Notes are available via the API; CSV export is for views. |
| Tasks | Tasks | partial | The API exposes tasks; one vendor lists tasks as migratable. |
| Synced emails/meetings/calls | Emails | partial | Coverage via API or CSV is not confirmed from vendor docs; audit before promising it. |
| Lists and entries | Custom objects | manual | Lists become HubSpot static or active lists, or properties/associations. Rebuild them by hand or with a tool. |
| Custom objects | Custom objects | manual | Remap to HubSpot custom objects or properties; a custom-property cap applies unless on Enterprise. |
| Workspace members | Contacts | manual | The API lists members; owners are mapped to HubSpot users via the owner property. |
What to expect
Reported to export as blank cells in CSV; re-source them.
Not exported; rebuild in HubSpot Workflows.
Not covered by export; rebuild in HubSpot.
Attio workflows run on Attio credits and are not portable.
Attio reports are not exported.
HubSpot user, team and permission setup is separate.
Attio's schema is more flexible than HubSpot's.
CSV exports only cover visible columns; check which activity and relation data the API returns.
Export relation attributes and the Attio record ID, then load associations in a second pass.
Show every needed column before export, or extract via API.
Batch requests, back off on 429 and chunk list queries.
Use CSV import, the API or a third-party migration service.
Data governance and compliance
Decide what is allowed to move before anything is exported. Tick each gate once it is agreed.
How we researched this page
How much to trust each section, and where it comes from.
The Attio API, rate limits and auth are documented by vendor docs and secondary sources. The CSV export behaviour, object mapping and Attio-to-HubSpot paths rest on third-party guides. I did not open Attio's export help page or HubSpot's docs, so those parts are not backed by vendor or HubSpot documentation.
Sources
Related migrations
Frequently asked questions
How do I migrate Attio to HubSpot?
1. Inventory Attio objects, custom attributes, lists and record-reference attributes. 2. Create an API token with read scopes for the objects, notes and tasks you need. 3. Identify which fields are enriched and need re-sourcing. 4. Decide which Attio lists become HubSpot lists, properties or custom objects.
What data can move from Attio to HubSpot?
These objects move directly: People and Companies. Check the mapping table for partial and manual items.
What does not move from Attio to HubSpot?
Enriched attributes, Attio workflows and automations and Permissions and reports. Plan to rebuild or retire these.
How long does a Attio to HubSpot migration take?
Small (<10k records): 1-2 weeks. Mid (10k-100k records): 3-6 weeks. Large (>100k records with custom objects): 6-12 weeks. These are planning estimates, not a quote.
What access do I need to export from Attio?
An API token with scopes enabled for each object read; new tokens start with no scopes. Workspace admin access to generate tokens (Settings → Developers); the exact role is not confirmed.
Is there a native HubSpot connector for Attio?
No native connector was found. Plan a CSV, API or third-party tool route.
What compliance issues apply when moving Attio data?
Check: Synced emails may contain sensitive content and Health, financial or minors' data in notes if used. Agree consent, retention and access rules before exporting.
Moving Attio into HubSpot?
A network of 153+ tiered HubSpot partners and 1,800+ accounts of experience. Tell us what you are moving and which hub matters most.
Talk to a partner