Unkai Mail v0.1.0

Unkai Mail v0.1.0 — first public release

Unkai Mail is a modern, native desktop mail client built on deep Nextcloud
integration. This is our first public build — mail works end-to-end and the
Nextcloud collaboration stack lives right in the inbox. It's early, capable,
and we'd love your feedback.

✨ What's new

This is the initial release, so everything is new. Highlights:

• Real mail, natively — IMAP, SMTP, and JMAP with a full rich-text
  compose window, native HTML rendering, and remote-image blocking by default.
• Nextcloud, all the way down — Talk rooms, Files (browse / attach / share),
  Calendar, Contacts, Notes, and Tasks pulled straight into the client.
• End-to-end mail encryption — OpenPGP and S/MIME signing, verification,
  encryption, and decryption.
• Encrypted at rest — the local mail cache is AES-256 encrypted via
  SQLCipher; credentials live in your OS keychain, never in plaintext.
• Multi-account with a unified inbox, per-account from-picker, and
  autodiscovery for quick setup.
• Search that scales — full-text search across your cached mail with an
  operator-prefixed query syntax.
• Themable and fast — light/dark mode, a curated theme picker, and
  localisation (English + German).

⚠️ Known issues

• Unsigned builds. Windows SmartScreen and macOS Gatekeeper will warn on
  first launch. Signed builds come once we provision certificates.
• No Intel-Mac build yet. macOS ships Apple Silicon (aarch64) only.

💾 Install

Platform	Download
Windows (10 / 11, x86_64)	Unkai-Mail_0.1.0_x64-setup.exe or Unkai-Mail_0.1.0_x64_en-US.msi
macOS (Apple Silicon)	Unkai-Mail_0.1.0_aarch64.dmg
Linux (Fedora / RHEL, x86_64)	Unkai-Mail-0.1.0-1.x86_64.rpm
Linux (Ubuntu / Debian, x86_64)	Unkai-Mail_0.1.0_amd64.deb
Linux (any distro, x86_64)	Unkai-Mail_0.1.0_amd64.AppImage