MailCraft
Copyright (c) 2026 the MailCraft contributors.
Licensed under the MIT License or the Apache License, Version 2.0, at your option
(LICENSE-MIT, LICENSE-APACHE).

MailCraft is a clean-room mail, calendar, contacts and tasks program. It is not affiliated with,
endorsed by or derived from Microsoft Outlook or any other mail product. Product names mentioned
in the documentation (to say what a feature corresponds to) are trademarks of their owners.

Portions adapted from WordCraft

MailCraft follows the architecture and conventions of WordCraft
(https://github.com/storytold/wordcraft), and these parts started from WordCraft's source, which is
Copyright (c) 2026 ArtCraft Team and the WordCraft contributors and licensed under the MIT License
or the Apache License, Version 2.0:

- workspace tooling: xtask (layers, assets, wasm, ci, stats, version, ico), rustfmt and clippy
  settings, the lint set;
- packaging scripts and metadata for macOS, Windows, Linux and the web (packaging/), and the
  release workflows (.github/workflows/), which call the shared craft-common-actions;
- the control channel (apps/mailcraft/src/control_server.rs, crates/control-key) and the MCP
  server's JSON-RPC framing and bridge (crates/mcp/src/server.rs, backend.rs);
- desktop plumbing: logging, Windows graphics-backend choice, native file dialogs, macOS Apple
  events (apps/mailcraft/src/), window geometry (crates/ui-egui/src/window_geometry.rs);
- the front end's design-token scheme, type rungs and ribbon widget shapes (crates/ui-egui/src/
  theme.rs, widgets.rs), and the headless screenshot example.

The ArtCraft name, wordmark and logos are trademarks of the ArtCraft Team. They are not open
source, are not included in this repository and are not covered by the license above.

Third-party material

This product bundles third-party material under its own licenses, listed below. The per-file
list (author, source, license) is in ATTRIBUTION.md.

- Inter (assets/fonts/Inter-*.ttf) — SIL Open Font License 1.1. See assets/fonts/OFL-Inter.txt.
- Source Sans 3 (assets/fonts/SourceSans3-Regular.ttf) — SIL Open Font License 1.1. See
  assets/fonts/OFL-SourceSans3.txt.
- JetBrains Mono (assets/fonts/JetBrainsMono-Regular.ttf) — SIL Open Font License 1.1. See
  assets/fonts/OFL-JetBrainsMono.txt.
- egui's built-in fonts, compiled in from the epaint_default_fonts crate
  (https://github.com/emilk/egui/tree/main/crates/epaint_default_fonts), whose fonts folder
  carries each licence text: Ubuntu Light (Ubuntu Font Licence 1.0), Hack (MIT, with the
  Bitstream Vera Licence for the glyphs from Bitstream Vera Sans Mono), Noto Emoji (SIL Open Font
  License 1.1; Copyright 2013 Google Inc.) and emoji-icon-font (MIT).
- No colour emoji face is bundled: the system's own (Segoe UI Emoji on Windows, Noto Color Emoji
  or another on Linux) is read from its fonts folder when the program starts, as Segoe UI is.
- All UI icons are drawn in code (crates/ui-egui/src/icons.rs) and the app icon is drawn in code
  (xtask/src/icon.rs); both are original work, MIT OR Apache-2.0.
- The sample mailbox (crates/engine/src/sample.rs) is invented text about invented people,
  MIT OR Apache-2.0.

Rust dependencies (egui, eframe, wgpu, rustls, serde, image, …) are permissively licensed
(MIT/Apache-2.0/BSD/ISC/Zlib) and fetched through crates.io. Among them, for pictures in mail:
image-webp (the WebP decoder of the image crate; MIT OR Apache-2.0) and flate2 with miniz_oxide
(gzip and deflate, for a picture a web server sends packed; MIT OR Apache-2.0, and MIT OR Zlib OR
Apache-2.0). Both are written in Rust throughout; no picture is decoded by anything else.

For time zones: jiff, jiff-core and jiff-tzdb (the Unlicense OR MIT), which carry the IANA Time
Zone Database (in the public domain) into every build, the browser's included. The names Windows
has for time zones beside their IANA names (crates/time/src/zone/windows.rs) restate the "001"
rows of windowsZones in the Unicode CLDR supplemental data: Copyright (c) Unicode, Inc., under
the Unicode License v3 (https://www.unicode.org/license.txt). They are identifiers; nothing else
of Windows is included.

For the one document a server hands over as XML (the Favorites of Outlook, read through Microsoft
Graph): quick-xml (the MIT License; https://github.com/tafia/quick-xml), with memchr under it (the
Unlicense OR MIT). Written in Rust throughout; it reads no DTD and expands no entity. In the
desktop app and the CLI only: the browser build has no server connection and does not include it.

For signing in to Exchange servers with NTLMv2 (written from Microsoft's MS-NLMP): md4, md-5 and
hmac from the RustCrypto project (each MIT OR Apache-2.0), in Rust throughout.

No Microsoft, Google, Apple, Mozilla or other vendor's icons, images, templates, sounds or artwork
are included.