generated: '2026-08-13'
method: searched
source: https://support.6sense.com/docs/product-release-notes
note: >-
  6sense publishes three distinct dated streams and none of them is an API
  changelog for the core data APIs. The product release notes are quarterly and
  platform-facing; the data refresh notes are monthly and are the most decision-
  relevant stream for a data vendor; the only per-change API changelog covers the
  acquired AI Email surface and stopped in January 2023. Recent window only.

streams:
- id: product-release-notes
  name: Product Release Notes
  url: https://support.6sense.com/docs/product-release-notes
  scheme: date
  cadence: quarterly
  scope: platform features across Revenue Marketing, Sales Intelligence, Advertising, Data
  latest: '2026-08-12'
- id: data-refresh
  name: Monthly Company Data Refresh Release Notes
  url: https://support.6sense.com/docs/monthly-company-data-refresh-release-notes-1
  scheme: month
  cadence: monthly
  scope: company account database — creations, removals, field freshness, regional match rate
  since: '2025-06'
  latest: '2026-07'
- id: ai-email-api
  name: AI Email (Saleswhale) API Changelog
  url: https://docs.saleswhale.com/
  scheme: date
  cadence: ad hoc
  scope: AI Email API endpoints, objects and webhooks
  latest: '2023-01-17'
  stale: true
  note: No entries in over three years.
- id: core-data-apis
  name: Core data API changelog
  url: null
  exists: false
  note: >-
    None published. Version changes on the Company Identification, Firmographics,
    Lead Scoring, People Enrichment and People Search APIs surface only as a new
    number in the version table at https://api.6sense.com/docs/.

current_versions:
  Company Identification API: v3
  Company Firmographics API: v3
  Lead Scoring API: v2
  Lead Scoring and Firmographics API: v2
  People Enrichment API: v2
  People Search API: v2
  AI Email API: v2
  MCP server: beta

entries:
- stream: product-release-notes
  date: '2026-08-12'
  url: https://support.6sense.com/docs/2026-08-12-product-release-notes
  breaking: false
  highlights:
  - Advertising campaign details page — account drill-down in Highlights, Account Journey, Buying Stage Distribution and New 6QAs.
  - Recommended leads for Advertising campaigns (beta) — persona-matched contacts from engaged accounts, CSV export.
  - JavaScript ad creative support for banner ads.
  - Third-party impression and click tracking (DoubleVerify, IAS, Campaign Manager 360), validated against approved vendor domains.
  - Workflow-associated advertising campaigns now identifiable and filterable.
- stream: product-release-notes
  date: '2026-07-15'
  url: https://support.6sense.com/docs/2026-07-15-product-release-notes
  breaking: false
- stream: product-release-notes
  date: '2026-05-12'
  url: https://support.6sense.com/docs/2026-05-12-product-release-notes
  breaking: false
- stream: product-release-notes
  date: '2026-02-13'
  url: https://support.6sense.com/docs/2026-02-13-product-release-notes
  breaking: false
- stream: product-release-notes
  date: '2025-11-11'
  url: https://support.6sense.com/docs/2025-11-11-product-release-notes
  breaking: false
- stream: product-release-notes
  date: '2025-08-07'
  url: https://support.6sense.com/docs/2025-08-07-product-release-notes
  breaking: false
- stream: data-refresh
  date: '2026-07'
  breaking: false
  highlights:
  - ~600K country-level accounts created, ~450K junk/dead-domain accounts removed; total ~76.2M.
  - ~930K accounts updated across name, address, funding, revenue, employee count and phone.
  - ~1.2% average lift in historic match rate across NA, EMEA, APAC and LATAM.
- stream: data-refresh
  date: '2026-06'
  breaking: false
  highlights:
  - ~135K accounts created, ~675K junk/dead-domain accounts removed; total ~76.1M.
  - ~2.36M accounts updated.
  - ~1% average lift in historic match rate.
- stream: ai-email-api
  date: '2023-01-17'
  breaking: true
  changes:
  - removed: rejection_reason property from the Conversation object, on both Conversation endpoints and the conversation.ended webhook.
- stream: ai-email-api
  date: '2022-09-30'
  breaking: false
  changes:
  - clarified: null conversation_id on a successful Enrolment.
- stream: ai-email-api
  date: '2022-08-18'
  breaking: false
  changes:
  - clarified: which Campaign statuses accept Lead enrolment.
- stream: ai-email-api
  date: '2022-08-13'
  breaking: false
  changes:
  - added: updated_at property on List all Campaigns.
  - added: updated_at__is_after query parameter to filter Campaigns.
- stream: ai-email-api
  date: '2022-08-12'
  breaking: false
  changes:
  - added: pagination on List all Campaigns.
- stream: ai-email-api
  date: '2022-08-04'
  breaking: false
  changes:
  - added: status property on List all Campaigns.
  - added: 'status[] query parameter to filter Campaigns by status.'