Cakemail Developer Portal

API v1.20

Released between February and April 2026. Current production version. Major focus on OpenAPI spec quality, developer experience, and stability.

Highlights

OpenAPI spec enrichment

  • Added comprehensive field descriptions across all API domains
  • Added error models to the OpenAPI spec
  • Tag descriptions for all major API categories
  • Operation descriptions for 85%+ of endpoints

Developer experience

  • Token expiration improvements with configurable expiration_seconds on MFA challenge and token refresh
  • Email subject parameter support
  • Tag filtering by date

Stability

  • Fixed "Event Loop is Closed" and "Unclosed client session" errors
  • File descriptor collision fix for uvicorn + aiohttp
  • Webhook domain validation from configuration