HubSpot Developer Changelog

End of support for Internet Explorer on August 17th

Live: August 17, 2021

As technology evolves, our goal at HubSpot is to evolve with it. We aim to build and maintain features that you care about, and deprioritize features that no longer deliver the security and functionality that our customers need.

Style fields in public beta, Design Manager creation of style fields in opt-in beta

Live: July 22, 2021

We're excited to announce that Style Fields, initially announced in June, are now in public beta. They must be created locally by adding them to a module's fields.json file, but we're working on making Style field creation available in the Design...

Style Fields are now in opt-in beta

Live: June 29, 2021

Content creators familiar with CMS Hub are used to our page editor having a styles tab when you have a module selected. Previously only default modules, and drag and drop area elements could have fields in the styles tab. We're now opening this up...

VS Code Extension - HubL linting in public beta

Live: June 23, 2021

We're releasing a new HubL linting feature into public beta for the HubSpot VS Code Extension.

Dynamic pages powered by CRM objects are now live

Live: June 14, 2021

The CRM object powered dynamic pages functionality is out of beta.

CMS Modules now allow further nesting & Media Bridge API now in public beta

Live: June 10, 2021

We've added an additional level of depth to module field nesting. We are also excited to announce our new Media Bridge API, now in public beta.

CLI Environment Variables

Live: June 1, 2021

CLI environment variables The HubSpot CLI has environment variables for communicating to the CLI the account ID and auth information to use. This is an alternative to using the hubspot.config.yml and is specifically useful in automating your...

HubDB dynamic page URLs are becoming easier to access

Live: June 1, 2021

HubDB dynamic page URLs are determined by a hs_path table column in HubDB tables. Previously, you could have both capitalized and uncapitalized characters in the field, allowing potential duplicate paths across rows. As of today we are now making...

Preview URLs on system domains Update

Announced: May 3, 2021

For customers hosting content on system domains (such as hs-sites.com and hubspotpagebuilder.com), it's important for HubSpot to protect the integrity of these domains. One way to combat abuse is by ensuring that preview content is only accessible...

Domains and redirects V3 APIs have exited beta

Live: March 17, 2021

We're excited to announce the CMS Domains and CMS URL Redirects V3 APIs are now out of beta. You can start using them in production.

Marketing Email API: v3 released to general availability and upcoming sunset for v1

Live: October 1, 2025

Today we're announcing changes for the two versions of the Marketing Emails API.

Update for Legacy CTA Editor Sunset

Live: November 30, 2025

We have an essential update on the scope and timeline of a previously announced Legacy CTA sunset. Starting September 1st, 2025, all new CTAs must be created using the new CTA editor. Existing Legacy CTAs that have already been created will continue...

Upcoming Sunset of Clearbit’s Free Logo API

Live: December 1, 2025

In December 2023, Clearbit was acquired by HubSpot, marking the beginning of an exciting new chapter for both companies. Since then, the Clearbit team has fully integrated into HubSpot, combining our expertise with HubSpot’s resources to better...

Upcoming Sunset: HubSpot Academy CMS for Developers Certification

Live: May 30, 2025

What’s changing Starting on May 30, 2025, the HubSpot CMS for Developers Certification will no longer be available. The content of this course has been updated over the years but has hit a point that significant revisions are needed to to keep up...

Breaking Change: HubL Function Limits for Marketing Emails

Live: May 28, 2025

Beginning on May 28, 2025, we are enforcing the CMS HubL function limits for all customers using the following functions in their Marketing Emails, per our Software Products, Packaging, and Limits policies.

Breaking Change for v3 Lists API Beta

Live: April 28, 2025

The v3 Lists API beta currently accepts both integers and strings for the ID of public folders used for list segmentation and returns the ID as an integer. We will be updating the IDs to use only strings in order to conform to the HubSpot...

Breaking Change: Enhanced Validations for Non-String Properties in HubSpot's CRMObject APIs

Live: November 10, 2025

Starting November 10th, 2025, HubSpot will implement enhanced validations for non-string property values, including enumeration and multi-value enumeration property values submitted via the CRMObject APIs. This change aims to improve data integrity...

Upcoming Sunset: Growth default theme for the HubSpot CMS

Live: May 14, 2025

Note: This post has been updated to reflect an updated sunset date of March 28. The original date for this was March 15. What’s changing Starting on May 14, 2025, the default CMS Growth theme will no longer be available for new HubSpot portals....

Reminder: Breaking Change for Enhanced Validations for Non-String Properties in HubSpot's CRMObject APIs

Live: November 10, 2025

Starting November 10, 2025, HubSpot will introduce enhanced validation rules for non-string property values, including enumeration and multi-value enumeration submitted via the CRMObject APIs. This change aims to improve data integrity and user...

Breaking Change: Large Export Partitioning and Association Limits for the CRM Export API

Live: April 28, 2025

On April 28th, 2025, we will be updating the CRM Exports API to bring it closer to feature parity with the in-app export tool as well as improve the overall performance of the API allowing for quicker file delivery. Exports that exceed one million...

Breaking Change: Removed Support for Referencing Custom Object Types by Base Name

Live: April 29, 2025

We are removing the undocumented support for requesting custom object types by their base name (GET/crm/v3/objects/{baseName}) in HubSpot public APIs. All custom object types must be referenced by their unique identifier (object type ID, fully...

Update: Legacy CTA Sunset

Live: November 30, 2025

Attention: We've recently revised our timeline on March 25th, 2025. For the most current details regarding this change, please check the latest updates in our changelog. Based on community feedback, we have updated our approach to transitioning from...

Upcoming Sunset: V1 Contact Lists API

Live: May 30, 2025

What’s changing? The V1 Contact Lists API will sunset on May 30th, 2025. After this date, calls made to the v1 endpoints will no longer function. We're sunsetting the V1 Contact Lists API to focus our development efforts on the improved V3 Lists...

Legacy CTA Sunset Timeline and Scope Update

Live: November 30, 2025

Attention: We've recently revised our timeline on March 25th, 2025. For the most current details regarding this change, please check the latest updates in our changelog.

Upcoming Sunset: Legacy CTAs

Live: November 30, 2025

Attention: We've recently revised our timeline on March 25th, 2025. For the most current details regarding this change, please check the latest updates in our changelog. We are sunsetting the Legacy CTAs (Call-To-Action) app and migrating it into a...

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Latest Posts

End of support for Internet Explorer on August 17th

Style fields in public beta, Design Manager creation of style fields in opt-in beta

Style Fields are now in opt-in beta

VS Code Extension - HubL linting in public beta

Dynamic pages powered by CRM objects are now live

CMS Modules now allow further nesting & Media Bridge API now in public beta

CLI Environment Variables

HubDB dynamic page URLs are becoming easier to access

Preview URLs on system domains Update

Domains and redirects V3 APIs have exited beta

Marketing Email API: v3 released to general availability and upcoming sunset for v1

Update for Legacy CTA Editor Sunset

Upcoming Sunset of Clearbit’s Free Logo API

Upcoming Sunset: HubSpot Academy CMS for Developers Certification

Breaking Change: HubL Function Limits for Marketing Emails

Breaking Change for v3 Lists API Beta

Breaking Change: Enhanced Validations for Non-String Properties in HubSpot's CRMObject APIs

Upcoming Sunset: Growth default theme for the HubSpot CMS

Reminder: Breaking Change for Enhanced Validations for Non-String Properties in HubSpot's CRMObject APIs

Breaking Change: Large Export Partitioning and Association Limits for the CRM Export API

Breaking Change: Removed Support for Referencing Custom Object Types by Base Name

Update: Legacy CTA Sunset

Upcoming Sunset: V1 Contact Lists API

Legacy CTA Sunset Timeline and Scope Update

Upcoming Sunset: Legacy CTAs