AltMail Download

AltMail for Windows

Email, beautifully simple.

A fast, private mail app for Windows 10 and 11. Every account in one inbox, and a design you'll enjoy opening every day.

Download for Windows Explore the features

$9.99, once. Includes a year of updates, on all your PCs.

AltMail showing an inbox with a message from Claude Bennett open in the reading pane.

Get the highlights.

  • Unified inbox

    Every account.
    One inbox.

    The sidebar: All Inboxes with 5 unread, VIPs, Flagged, and the account's Inbox.

  • VIPs and flags

    The people who matter,
    right at the top.

    Claude Bennett's message marked with the VIP star, and Priya Natarajan's with a red flag.

  • Smart Mailboxes

    Mailboxes that
    sort themselves.

    The sidebar's Smart Mailboxes: Unread, Attachments, Today and Snoozed.

  • Claude

    Catch up on a thread
    in a sentence.

    A summary of the Lisbon offsite email above the message.

    Optional. Uses your own Anthropic API key.

  • Snooze

    Not now?
    Snooze it.

    Back at the top of your inbox tonight, at the weekend, or next week.

  • Privacy

    Private
    by design.

    Tracking pixels removed. No AltMail servers in between.

Looks good in any light.

A clean-room design, built from scratch. It follows Windows between light and dark, or stays the way you like it. On an OLED screen, dark mode can go pure black.

The AltMail inbox in light mode. The AltMail inbox in dark mode. The AltMail inbox in dark mode with OLED black: the sidebar, toolbar and message list are pure black.

Stay on top of everything.

Flags, Smart Mailboxes, rules and search keep the important mail in front of you and the rest out of the way.

Seven flag colours.
Name them anything.

Flag what needs doing, then find it again in one click. The colours match Apple Mail's, so they carry over to your iPhone and Mac.

  • Urgent
  • Waiting on reply
  • Read later
  • Travel
  • Bills
  • Family
  • Someday

Smart Mailboxes

VIPs, Unread, Today, Attachments, Needs Reply and more, built in. Save any search as your own.

  • VIPs
  • Flagged
  • Unread
  • Today
  • Attachments
  • Snoozed

Rules

Move, archive, flag or mark as read the moment mail arrives, so your inbox tidies itself.

Search that understands you

Type a name, or get precise.

  • From Priya
  • With attachments
  • From the last 7 days

Your shortcuts

Start from Apple Mail, Gmail or Outlook keyboard shortcuts, then change any of them.

Write it right.
Send it when it counts.

  • Undo send. A few seconds to take it back.
  • Send later. Write tonight, deliver at nine.
  • Follow-up reminders. A nudge when nobody replies.
  • Templates and signatures. For every address you send from.
A reply to Claude Bennett in the compose window.

Your mail stays yours.

There's no AltMail account, no AltMail server and no tracking. Mail goes straight from your provider to your PC.

  • Tracking pixels removed

    Senders can't see when you open their email.

  • Remote images on your terms

    Load them per message, per sender, or always.

  • Phishing warnings

    Look-alike senders and disguised links are called out before you click.

  • PGP and S/MIME

    Sign and encrypt messages, and read encrypted mail.

  • App lock with Windows Hello

    Lock AltMail with your face, fingerprint or a PIN.

  • Passwords in Windows

    Sign-ins and keys are kept in the Windows credential vault.

Works with the accounts you already have.

Sign in with your provider in a couple of clicks, then see everything together. Add as many accounts as you like.

  • Gmail
  • Outlook.com
  • Microsoft 365
  • iCloud Mail
  • Yahoo Mail
  • Fastmail
  • Any IMAP server

Right at home on Windows.

Built for Windows 10 and 11, with the details you'd expect.

  • Notifications you can act on

    Reply, archive or mark as read straight from the notification.

  • Unread count on the taskbar

    A badge on the icon, sized for your display.

  • Quiet hours

    Only VIPs, or nobody at all, when you need to focus.

  • Your default mail app

    Email links open a new AltMail message, ready to go.

How AltMail compares.

Everything you need from a mail app, for one small price.

AltMail Thunderbird Spark eM Client
Price $9.99 onceIncludes a year of updates. Keeps working after that. Free Free plan, or a Plus or Pro subscription Free plan, or a yearly subscription or one-time licence
Every feature without a subscription AI and Pro features need Plus or Pro AI needs the yearly subscription
Unlimited email accounts 2 on the Free plan
No limit on devices 1 on Free, up to 3 on Personal
Threaded conversations
Account access stays on your PC Keeps account tokens or passwords on its servers
AI features OptionalClaude, with your own API key Not built inAvailable as add-ons With Plus or ProLimited preview on Free With a subscription

Based on each company's published plans and policies as of October 2026: Thunderbird, Spark pricing and privacy, eM Client pricing. Thunderbird, Spark and eM Client are trademarks of their owners.

Get AltMail.

$9.99

One payment, for as many PCs as you like. A year of updates included, and it keeps working after that.
For Windows 10 and 11, on Intel, AMD and Arm.

Download for Windows

Coming soon.