Penguin Mail 發布：Linux 用 Rust 開源郵件客戶端，內建 AI 助手

Mail and calendar for Linux

Gmail, Microsoft and any IMAP or POP3 account, with your calendar and contacts, in one fast app on your own computer.

Version 1.0.0. Free software under GPL-3.0-or-later, for x86_64 Linux.

What it does

• Gmail, Microsoft, IMAP and POP3 accounts

  Sign in to Gmail, to Outlook.com, Hotmail, Live or Microsoft 365, or to Fastmail, iCloud, Yahoo or any IMAP, POP3 and SMTP server. Penguin Mail finds the server settings from your address.

• One inbox, synced from the tray

  Read every account in one inbox or one at a time. Penguin Mail keeps syncing from the system tray, with an unread count and notifications you can act on.

• Your calendar

  Day, Week, Month and Agenda views of every calendar on every account: Google, Microsoft, and CalDAV where your provider offers it. Answer an invitation from the message it came in.

• Contacts

  Your contacts from Google, Microsoft, or CardDAV where your provider offers it, and suggestions from the people you write to as you type a recipient.

• OpenPGP and S/MIME

  Sign and encrypt through your own GnuPG. Penguin Mail never holds your keys or asks for a passphrase.

• Rules

  Gmail filters, Microsoft inbox rules, and Sieve rules where your provider offers them, listed in plain words, with a form to add one.

• An optional assistant

  Off until you choose a model. It can run on your own computer, through LM Studio or Ollama, and it asks before it sends mail or changes a setting.

A closer look

Ask your mail a question

Press Ctrl+J and ask which sent mail is still waiting on a reply, or what is in your promotions. The assistant reads your mailboxes with the app's own tools and shows each one it ran.

An inbox split the way Gmail splits it

A bar above the list sorts mail into Primary, Updates, Promotions and Social, using Gmail's own categories. Move a sender to another category and it stays there.

Send it later, or take it back

Schedule a message for Monday morning and it goes out on time while Penguin Mail runs, even from the tray. Sent mail waits a few seconds with an Undo button first.

An address for every sign-up

Hide My Email makes a Gmail plus address for each site you join. When one of them starts getting spam, turn that address off and its mail goes to the Trash.

Your mail stays on your computer

Penguin Mail has no server of its own, no tracking and no ads. Gmail and Google Calendar accounts talk to Google directly, and Microsoft accounts talk to Microsoft Graph, so no other server sees your mail.

Read the privacy policy

Watch the tour

A two-minute video on YouTube.