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Changelog

A chronological list of changes to the ValidKit API contract.

February 28, 2026

  • API
    Adds known-valid domain safeguard: returns valid with is_known_valid_fallback flag when DNS transiently fails for major email providers (gmail.com, outlook.com, etc.) instead of a false negative.
  • Fix
    Adds 10-second timeout cap for verification requests to guarantee faster failure responses on unreachable mail servers.

February 8, 2026

  • API
    Changes request ID format to consistently return 9 characters across all API responses.

November 20, 2025

  • API
    Adds privacy endpoints for GDPR data deletion and export requests (/api/v1/privacy/delete, /api/v1/privacy/export).

October 16, 2025

  • Fix
    Fixes disposable domain detection with updated dataset of 4,725+ providers.

July 28, 2025

  • API
    Changes error responses for rate limit and quota limit errors to include upgrade guidance.

July 15, 2025

  • API
    Adds private caching option for enterprise customers with dedicated single-tenant cache.

July 1, 2025

  • API
    Adds agent-optimized endpoint /api/v1/verify/bulk/agent with 80% smaller response payload.

June 10, 2025

  • API
    Adds batch processing support for up to 10,000 emails with webhook callbacks for completion notifications.
  • API
    Adds compact response format that reduces payload size by 80%.