January 22, 2026

Documentation Update – Upcoming Removal of Internal-Only Endpoints
- Certain endpoints under /emails/subaccounts and /unit_quotes were previously documented publicly but are intended for internal use only. These endpoints are not required or supported for external partner integrations.
  - To keep the public documentation accurate and focused, documentation for the following endpoints will be removed on Friday, February 20, 2026:
    - GET /emails/subaccount
    - POST /emails/subaccount
    - PUT /emails/subaccount
    - DELETE /emails/subaccount
    - GET /unit_quotes
    - GET unit_quotes/{unit_id}
    - PUT /unit_quotes
  - If you believe your integration depends on these endpoints, please contact [email protected] before Tuesday, February 17, 2026.
- No changes are being made to supported public CiiRUS-API functionality.