Free & open-source email client · Beta
MailCraft is a free email app for Windows, macOS and Linux with the three-pane workflow you already know: folders, a message list grouped by date, a reading pane, and calendar and contacts beside it. It works with any mail provider, keeps your mail on your own machine, and never phones home.
Windows · macOS · Linux · FreeBSD — no account, no sign-up.
No learning curve: the buttons, panes and keyboard shortcuts work the way you expect.
A ribbon with the everyday buttons (simplified or classic), a date-grouped message list, conversations, flags, categories, Archive, Snooze, Undo and the To-Do Bar. Ctrl+N, Ctrl+R, Ctrl+E, the Alt key tips and the rest just work.
Your folders are cached on your computer, so mail opens instantly, search is quick, and you can read and write without a connection. Changes sync when you're back online.
Search every folder with from:, subject:, has:attachment and more, or use Advanced Search. Older mail is searched right on your server.
Day, work week, week and month views, meeting invitations, reminders and an address book, synced with CalDAV, CardDAV, Exchange or Microsoft 365, even with no email account, plus a task list on your computer.
Rules, Quick Steps, Search Folders, junk filters with safe and blocked senders, Clean Up for long threads, and several accounts in one window.
Open Outlook data files (.pst) with their mail, contacts, calendar and tasks, without Outlook, and export any account back to one — see opening a .pst file.
MailCraft talks to your mail servers and nobody else.
.pfx file, a smart card, the Windows certificate store or the macOS Keychain, or OpenPGP with your own key.Free for everyone. MailCraft is in beta, with a new version every few days, and your feedback shapes what comes next.
Windows 10 and 11 · x64, ARM64, x86
Apple silicon and Intel
x86_64, aarch64, riscv64
FreeBSD x86_64, the command-line tool, the browser version
Every file is listed with its SHA-256 checksum in SHA256SUMS.txt on the MailCraft releases page. Prefer to build it yourself? cargo run --release -p mailcraft -- --sample
MailCraft's builds aren't code-signed yet (signing certificates cost money the project doesn't have yet), so your system asks once before opening it.
chmod +x MailCraft*.AppImage) and run it.The source is public and every build is made by GitHub Actions from it, with checksums published beside the files.
Getting started, step by step.
Add your accounts, open your .pst files, keep your shortcuts — and move back any time.
Gmail, Outlook.com, Microsoft 365, Exchange, iCloud, Yahoo, Fastmail or any IMAP account.
Run MailCraft from any folder and leave no mail on the computer.
Read an Outlook data file's mail, contacts and calendar, free, on any system. The file is never changed.
MailCraft gets better because people use it and say what's missing. Found a bug, or something that works differently from what you expect? Tell us — every report is read.
Yes. It's open source under the MIT or Apache-2.0 license: free to use, share and change, with no ads, no subscription and no data collection.
Pick your system in the download section. On Windows, run the .msi installer, or unzip the portable .zip anywhere and run mailcraft.exe; on a Mac, open the .dmg and drag MailCraft to Applications; on Linux, use the AppImage, .deb, .rpm or Flatpak. The builds aren't code-signed yet, so your system asks once: here's what to click. After that, MailCraft updates itself. The source code is on GitHub.
Any account with IMAP and SMTP (Gmail, iCloud, Yahoo, your own server…) or POP3, JMAP accounts such as Fastmail, Microsoft 365 and Outlook.com through Microsoft Graph, and your organization's own Exchange server. Settings are found from your address; the setup guide shows where Gmail, iCloud and Yahoo want an app password.
Yes — if you like the way Outlook works but want something free, open source and private, MailCraft gives you the same everyday workflow: folders, a reading pane, the ribbon's buttons and the familiar shortcuts. It's built from scratch from the published email standards, so none of its code, icons or images come from Microsoft, and it isn't affiliated with or endorsed by Microsoft.
On your computer and on your provider's servers — nowhere else. MailCraft keeps a local copy so it's fast and works offline; you choose how much (or, with Online only, none at all).
The everyday features are there and in use, but MailCraft is young: expect rough edges, frequent updates, and please report what you find. Keep your mail on your provider's servers (as IMAP and Exchange do) while you try it.
English, Español, Français, Deutsch, Português (Brasil), Italiano, Nederlands, Русский, 日本語, 한국어, 简体中文, 繁體中文, Türkçe, العربية and עברית — following your system, or chosen in Options.
Free, open source, and yours — on Windows, macOS and Linux.