AltCatalog
Catalog Email clients Windows Mail and Calendar
Discontinued Windows Mail and Calendar was discontinued in December 2024. The alternatives below are active products you can switch to. All discontinued →

Alternatives to Windows Mail and Calendar

The mail and calendar apps built into Windows

It is proprietary, free and available on Windows. None of its 11 checklist rows are verified yet.

The mail, calendar and people apps shipped with Windows 10 and 11. Support ended on 31 December 2024, after which they can no longer send or receive mail; Microsoft directs users to the new Outlook.

Most compared with aercApple MailAqua Mail
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Who it's for

Windows 10/11 users who relied on the free, built-in Mail, Calendar, and People apps for basic email, scheduling, and contacts without installing a separate client.

What you get

A lightweight, no-cost combination of email, calendar, and contact management preinstalled with Windows, supporting Microsoft accounts as well as Gmail, Yahoo!, iCloud, and other IMAP/POP providers. Microsoft ended support for these apps on December 31, 2024, and Windows 11 now ships with the new Outlook as the default mail app instead. Existing Mail, Calendar, and People installations still run but no longer receive updates, and Microsoft recommends migrating to new Outlook or Outlook.com for continued email and calendar functionality.

How it works

Users added one or more email accounts within the apps to sync mail, calendar events, and contacts automatically; Microsoft now directs users to export their data and switch to the new Outlook for Windows app, which consolidates the same functionality under one interface.

Why people leave Windows Mail and Calendar

Dashed reasons are sourced facts; the rest are opinions. Vendors can dispute.

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Ranked alternatives

Ordered by Alt Score. Click any score to see the breakdown.

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01
a

Modern terminal email for developers.

MIT LinuxmacOS
02

The built-in Apple mail client.

Proprietary macOSiOS
03

Configurable Android mail client.

Proprietary Android
04

Cross-platform unified inbox.

Proprietary WindowsmacOSLinuxiOS +2
05

PGP-capable mail with AI writing.

Proprietary WindowsmacOSiOSAndroid
06

Full-featured desktop client with one-time license.

Proprietary WindowsmacOSiOSAndroid
07

GNOME's full groupware client.

LGPL-2.1 Linux
08

Privacy-first Android email.

GPL-3.0 Android
09

GNOME's lightweight mail app.

LGPL-2.1-or-later Linux
10

Open source Android mail, now Thunderbird Mobile.

Apache-2.0 Android
11

Windows-first unified inbox.

Proprietary WindowsmacOS
12
M

Open source client with read receipts.

GPL-3.0 WindowsmacOSLinux
13

Native macOS client for Gmail.

Proprietary macOS
14

Shared inboxes and team email collaboration.

Proprietary WebWindowsmacOSiOS +1
15

The terminal mail power tool.

GPL-2.0 LinuxmacOS
16

Microsoft's mail and calendar client.

Proprietary WindowsmacOSiOSAndroid +1
17

Power-user desktop mail (acquired by eM Client).

Proprietary macOSWindows
18

AI-first Gmail client from ex-Googlers.

Proprietary WebmacOSWindowsiOS +1
19

Smart inbox with team comments.

Proprietary WindowsmacOSiOSAndroid
20

Speed-obsessed premium email.

Proprietary WindowsmacOSiOSAndroid +1
21

Veteran secure Windows mail client.

Proprietary Windows
22

Mozilla's open source desktop mail.

MPL-2.0 WindowsmacOSLinux
Sources & verification 4

Every fact and feature listed for Windows Mail and Calendar is verified against its own pages. Each alternative is sourced on its own page.

FAQ

Yes. aerc, Apple Mail and Aqua Mail have a free tier or are fully free. Free-tier limits in the comparison table are verified and dated.

aerc, Evolution and FairEmail — every license claim links its source.