generated: '2026-08-13'
method: searched
source: https://hunter.io/changelog
scheme: dated-product-announcements
scheme_note: >-
  Hunter publishes a dated product changelog, not a versioned API changelog. Entries are tagged by
  product area and change kind (New feature / Improvement / Update / Announcement). There are no
  semantic version numbers and no separate API release notes, so API-affecting changes have to be
  read out of product entries - the June 2026 metrics change is a worked example: it silently
  altered the numbers returned by the API and by the MCP tools.
current_version: v2
window: '2026-02-17 to 2026-06-16 (most recent 8 entries at time of capture)'
entries:
- date: '2026-06-16'
  title: Engagement rates are now recipient-based
  area: Sequences
  kind: [Improvement, Update]
  breaking: true
  api_affecting: true
  highlights:
  - Open, click, reply and unsubscribe rates now count distinct recipients rather than individual emails.
  - Applies to the Sequences list, sequence stats, CSV export, reporting, the API and the MCP tools.
  - 'Stated consequence for API consumers: per-step counts no longer sum to the recipient-based sequence totals.'
  - Bounce rate and successful rate are unchanged (still per-delivery SMTP events).
- date: '2026-04-09'
  title: Buy domains, create email accounts, and protect your sender reputation
  kind: [New feature]
  breaking: false
- date: '2026-03-31'
  title: 'Sequences: A/B testing is here'
  area: Sequences
  kind: [New feature, Improvement]
  breaking: false
- date: '2026-03-19'
  title: 'Discover: smarter AI Assistant & saved companies filter'
  area: Discover
  kind: [AI, Improvement]
  breaking: false
- date: '2026-03-17'
  title: 'Progressive Sending: gradually scale your outbound volume'
  kind: [Announcement, New feature]
  breaking: false
- date: '2026-03-12'
  title: Email Accounts Center & Sender Health
  kind: [Announcement, New feature, Improvement]
  breaking: false
- date: '2026-02-24'
  title: Reveal emails in Discover based on remaining credits
  area: Discover
  kind: [Improvement]
  breaking: false
- date: '2026-02-17'
  title: Company Logo API (free)
  kind: [New feature]
  breaking: false
  api_affecting: true
  highlights:
  - 'Free unauthenticated logo endpoint: GET https://logos.hunter.io/{domain} returning PNG, WEBP or AVIF.'
  - Not present in the captured v2 OpenAPI and not exposed as an MCP tool.