# Nylas Auth Service

Source: https://developer.nylas.com/docs/changelogs/2026-02-27-auth/

## Added

- **Customer-facing IMAP/SMTP validation logs** — Authentication validation failures for IMAP and SMTP connections now produce customer-visible logs, making it easier to diagnose grant creation issues.
- **Request ID forwarding** — Auth service logs now include `request_id` for improved traceability when debugging authentication flows.

## Fixed

- **Plus sign in hosted auth** — The hosted authentication UI now correctly accepts email addresses containing a `+` symbol (e.g., `user+tag@example.com`).
- **Grant re-authentication** — Fixed an issue where re-authenticating an existing grant could fail instead of updating the existing credentials.
- **Hosted auth redirect encoding** — Fixed login hint redirect encoding in the hosted authentication flow.

## Updated

- Improved authentication service performance with optimized read operations.