# Changelog

All notable changes to this project will be documented in this file.

The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).

## [0.7.0] - 2026-08-28

### Changed

- Upgraded dependencies: clap 4.6.6, imap 3.0.0-alpha.15, native-tls 0.2.18
- Migrated IMAP client to the imap 3.x `ClientBuilder` and `AppendCmd` APIs
- Docker images are now tagged with the crate version on main and the short commit SHA otherwise
- Upgraded build toolchain to Rust 1.98 (pinned via `rust-toolchain.toml`)
- Updated Docker images: builder `rust:1.98-trixie`, runtime Debian trixie with `libssl3t64`

### Removed

- Unused `imap-proto` dependency
- Unsound `lexical-core 0.7.6` dependency chain (RUSTSEC-2023-0086), `cargo audit` is now clean

## [0.6.0] - 2025-12-12

### Changed

- Replaced the third-party `rust-pop3-client` crate with a custom POP3 implementation
- POP3 messages are now retrieved as raw bytes over native-tls, without encoding or line ending conversions
- Reduced dependency footprint by dropping `rust-pop3-client`

### Fixed

- POP3 byte-stuffing (doubled leading dots) is now handled correctly
- Original email byte structure is preserved during retrieval

## [0.5.0] - 2025-12-10

### Fixed

- `X-WS-*` headers (e.g. `X-WS-Attachment-UUID`) are now detected as MIME headers so adjacent attachment headers (`Content-Type`, `Content-Disposition`) get normalized properly

### Added

- Test case for attachment header normalization

## [0.3.0] - 2025-12-04

### Added

- Email header normalization to ensure RFC 5322 compliance
- New `normalize-imap` binary tool to fix existing malformed emails in IMAP inbox
- IMAP fetch functionality to retrieve all messages from inbox
- IMAP delete and expunge functionality for message management
- Dry-run mode for the normalization tool (`--dry-run` flag)
- Confirmation prompts with skip option (`--yes` flag)
- Comprehensive email header continuation line fixing
- Analysis and reporting of which emails need normalization

### Changed

- Refactored project structure to use library + multiple binaries
- Main binary renamed to `pop-to-imap` for clarity
- All modules made public for library usage
- Updated README with detailed usage instructions for both tools

### Fixed

- Email headers with missing whitespace on continuation lines now properly formatted
- RFC 5322 Section 2.2.3 compliance for header folding

## [0.1.0] - 2025-12-03

### Added

- Initial release
- POP3 to IMAP email migration
- TLS/SSL support for secure connections
- Environment-based configuration via .env files
- Docker support with multi-stage builds
- Basic error handling and logging