HubSpot / CRM & support

HubSpot Legacy v1-v3 APIs and legacy apps unsupported shutdown date

At Fall Spotlight on September 15, HubSpot is announcing the end of support for v1-v3 APIs, legacy public apps, and legacy private apps, all with a September 2027 enforcement date.

318days left
Change
Shutdown
Effective
September 2027 (vendor gave a month, not a day)
Announced
Sep 15, 2026
Replacement
none named; check the source
Source
developers.hubspot.com
Vendor's words
Legacy APIs and Apps: What's Going Unsupported and When. At Fall Spotlight on September 15, HubSpot is announcing the end of support for v1-v3 APIs, legacy public apps, and legacy private apps, all with a September 2027 enforcement date. If your integration or app uses any of these, you have a 12-mo

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