KMail AlternativesEmail Clients and other similar apps like KMail

KMail is described as 'The email component of Kontact, the integrated personal information manager of KDE. Kontact personal information manager and groupware software suite for KDE. It supports calendars, contacts, notes, to-do lists, news, and email' and is a Email Client in the office & productivity category. There are more than 50 alternatives to KMail for a variety of platforms, including Windows, Linux, Mac, Android and iPhone apps. The best KMail alternative is Thunderbird, which is both free and Open Source. Other great apps like KMail are Evolution, Microsoft Outlook, Betterbird and eM Client.

KMail iconKMail
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KMail is the email component of Kontact, the integrated personal information manager of KDE. Kontact is a personal...

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KMail alternatives page was last updated Mar 15, 2025
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Alternatives
  1. Thunderbird icon

    Thunderbird

     2449 likes
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    Cross-platform email client supporting multiple identities, chat, and strong filtering. Extend functionality with add-ons like RSS/Atom feed readers and PGP support.

    83 Thunderbird alternatives

    License model

    • Free • Open Source

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • BSD
    • AppImageHub
    • Snapcraft
    • Flathub
    • PortableApps.com
    • F-Droid
    • Haiku
    • Homebrew
    • Chocolatey
    Thunderbird screenshot 1

    Properties

    1.  Customizable
    2.  Intuitive Interface

    Features

    1.  Extensible by Plugins/Extensions
    2.  Multiple Account support
    3.  IMAP Support
    4.  Calendar Integration
    5.  SMTP Support
    6.  Email Organizer
    7.  Add-ons
    8.  POP3 Support
    9.  Built-in RSS reader
    10.  Graphical User Interface
    11.  Dark Mode
    12. Google Calendar icon  Google Calendar integration

    Thunderbird VS KMail

     
    Comments about Thunderbird as an Alternative to KMail
    Guest
    Positive •May 6, 2019
    0

    On top of being a very good groupware, Thunderbird allows you to easily select a differnt partition/folder to save all your email to, in real time, without having to creat seemlink (you have to create many seemlink with Kontact/Kmail to achieve the same result) and it's lighter than Kmail/PIM

    Guest
    Positive •Mar 4, 2017
    -1

    It works fine and easy to install.

    KMail Icon
    Thunderbird icon

    • Almost everyone thinks Thunderbird is a great KMail alternative.

    • Thunderbird is the most popular Windows, Android, Mac & Linux alternative to KMail.

    • Thunderbird is the most popular Open Source & free alternative to KMail.

    • Thunderbird is Free and Open SourceKMail is also Free and Open Source
    • Thunderbird is CustomizableKMail is not according to our users
  2. Evolution icon

    Evolution

     203 likes
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    Evolution is a personal information management application that provides integrated mail, calendaring, address book and task list functionality.

    74 Evolution alternatives

    License model

    • Free • Open Source

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Linux
    • BSD
    • Flathub
    • S/MIME
    • GNOME
    • OpenPGP
    Mail

    Top Evolution Features

    1.  Calendar Integration
    2.  Contacts
    3.  CalDAV Support
    4.  Calendar View
    5.  Ad-free
    6.  Spam Filter
    7.  Multiple Account support
    8. Google Calendar icon  Sync with Google Calendar
    9.  Extensible by Plugins/Extensions
    10.  Dark Mode
    11.  Works Offline
    12.  GPG Encryption

    Evolution VS KMail

     
  4. Microsoft Outlook icon

    Microsoft Outlook

     397 likes
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    Streamline emails, calendars, contacts, and task management with a smart inbox prioritizing critical messages. Includes calendar scheduling, third-party app integration like Facebook, Dropbox, and Trello, and support for Microsoft Exchange, Outlook.com, and Gmail, ensuring efficient task and email handling.

    131 Microsoft Outlook alternatives

    License model

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • Windows
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Apple Watch
    • Android Wear
    Outlook 365 on Windows

    Top Microsoft Outlook Features

    1.  Exchange
    2.  Native application
    3.  Email Organizer
    4.  Calendar Integration
    5.  Calendar View
    6.  Cloud Sync
    7.  Support for @mentions
    8.  Unified inbox
    9.  Multiple Account support
    10.  Works Offline
    11.  Support for Aliases
    12.  Dark Mode

    Microsoft Outlook VS KMail

     

    • Microsoft Outlook is the most popular Web-based, iPhone, iPad & Android Tablet alternative to KMail.

    • Microsoft Outlook is the most popular commercial alternative to KMail.

    • Microsoft Outlook is Paid and ProprietaryKMail is Free and Open Source
  5. Betterbird icon

    Betterbird

     48 likes
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    Betterbird, a soft fork of Mozilla Thunderbird, improves user experience with advanced features, bug fixes, security patches, and multi-row descriptions similar to Outlook. Compatible with multiple platforms and can be used alongside Thunderbird, sharing the same profile.

    27 Betterbird alternatives

    License model

    • Free • Open Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Flathub
    • Chocolatey
    Betterbird screenshot 1

    Properties

    1.  Privacy focused
    2.  Support for Themes
    3.  Lightweight

    Features

    1.  Multiple Account support
    2.  Extensible by Plugins/Extensions
    3.  Works Offline
    4.  Unified inbox
    5.  Ad-free
    6.  Portable
    7.  No Tracking
    8.  Spam Filter
    9.  Calendar Integration
    10.  SMTP Support
    11.  IMAP Support
    12.  POP3 Support

    Betterbird VS KMail

     
  6. eM Client icon

    eM Client

     230 likes
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    eM Client is a full featured e-mail client with a modern and easy to use interface. eM Client also offers calendar, tasks, contacts, notes and chat.

    61 eM Client alternatives

    License model

    • Freemium • Proprietary

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • Windows
    • Android
    eM Client: Inbox view

    Top eM Client Features

    1.  IMAP Support
    2.  Calendar Integration
    3.  Multiple Account support
    4.  PGP Encryption
    5.  Dark Mode
    6.  Exchange
    7.  Unified inbox
    8.  Cloud Sync
    9.  Email Organizer
    10. Google Calendar icon  Sync with Google Calendar
    11.  Automatic Backup
    12.  CardDAV Support

    eM Client VS KMail

     
  7. Geary icon

    Geary

     105 likes
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    Geary is an email application built around conversations, for the GNOME 3 desktop.

    47 Geary alternatives

    License model

    • Free • Open Source

    Application type

    Country of Origin

    • US flagUnited States

    Platforms

    • Linux
    • BSD
    • Flathub
    • GNOME
    • Flatpak
    Main window

    Properties

    1.  Lightweight
    2.  Privacy focused

    Features

    1.  Multiple Account support
    2.  IMAP Support
    3.  Conversational email approach
    4.  No Tracking
    5.  Dark Mode
    6.  Ad-free
    7.  Spam Filter
    8.  Email Organizer
    9. Gmail icon  Gmail integration
    10.  Labels for content
    11.  SMTP Support
    12.  Multiple languages

    Geary VS KMail

     
  9. Mailspring icon

    Mailspring

     106 likes
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    Boost your productivity and send better email with Mailspring, a beautiful, fast email client for Mac, Windows, and Linux. Mailspring is free to use and an optional pro version adds read receipts, send later, reminders and more.

    41 Mailspring alternatives

    License model

    • Freemium • Open Source

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • Windows
    • Linux
    • Arch Linux
    • Fedora
    • Ubuntu
    Clean design with integrated search and swipe gestures

    Properties

    1.  Customizable
    2.  User friendly
    3.  Support for Themes

    Features

    1.  Unified inbox
    2.  Multiple Account support
    3.  Dark Mode
    4.  Email tracking
    5.  Snooze Mail
    6.  Built-in translation
    7.  Ad-free
    8.  Theme Customization
    9.  Email Organizer
    10.  Extensible by Plugins/Extensions
    11.  Keyboard Shortcuts
    12.  IMAP Support

    Mailspring VS KMail

     
  10. Claws Mail icon

    Claws Mail

     102 likes
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    Claws Mail is an email client (and news reader), based on GTK+, featuring

    Quick response Graceful, and sophisticated interface Easy configuration, intuitive operation Abundant features Extensibility Robustness and stability.

    62 Claws Mail alternatives

    License model

    • Free • Open Source

    Application types

    Platforms

    • Windows
    • Linux
    • BSD
    The main window

    Properties

    1.  Lightweight
    2.  Privacy focused
    3.  Customizable

    Features

    1.  Extensible by Plugins/Extensions
    2.  Multiple Account support
    3.  IMAP Support
    4.  Spam Filter
    5.  Works Offline
    6.  No registration required
    7.  Ad-free
    8.  Dark Mode
    9.  Calendar Integration
    10.  Portable
    11.  GPG Encryption
    12.  Built-in RSS reader

    Claws Mail VS KMail

     
    Comments about Claws Mail as an Alternative to KMail
    Guest
    Positive •Dec 29, 2015
    0

    Is an e-mail client, just as KMail.

    KMail Icon
    Claws Mail icon
    • Claws Mail is Free and Open SourceKMail is also Free and Open Source
    • Claws Mail is Lightweight and Privacy focusedKMail is not according to our users
  11. Apple Mail icon

    Apple Mail

     236 likes
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    There’s big news attached. The best way to manage email on a Mac, according to Apple.

    73 Apple Mail alternatives

    License model

    • Free • Proprietary

    Application type

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • iPhone
    • iPad
    Apple Mail screenshot 1

    Properties

    1.  Customizable

    Features

    1.  Bundled with macOS
    2.  Email Organizer
    3.  Multiple Account support
    4.  Dark Mode
    5.  Spam Filter
    6.  CalDAV Support
    7.  CardDAV Support
    8.  Exchange
    9.  Rich text editing
    10.  Encrypted Email

    Apple Mail VS KMail

     
  12. EssentialPIM icon

    EssentialPIM

     75 likes
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    The powerful, full-featured Personal Information Manager for Windows offering Email, Synchronization, Portability, Network support, Android and iOS versions.

    176 EssentialPIM alternatives

    License model

    • Freemium • Proprietary

    Application types

    Country of Origin

    • EE flagEstonia
    • European Union flagEU

    Platforms

    • Windows
    • Android
    • iPhone
    EssentialPIM screenshot 1

    EssentialPIM Features

    Features

    1.  Personal Information Manager (PIM)
    2.  Portable
    3. Google Calendar icon  Google Calendar integration
    4.  Cloud Sync
    5.  Integrated Password Manager
    6.  Dark Mode
    7. Gmail icon  Gmail integration
    8.  Google Apps integration
    9. Google Contacts icon  Google contacts integration

    EssentialPIM VS KMail

     
  13. Mailpile icon

    Mailpile

     117 likes
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    Mailpile is a modern, fast web-mail client with user-friendly encryption and privacy features. The development of Mailpile is funded by a large community of backers and all code related to the project is and will be released under an OSI approved Free Software license.

    60 Mailpile alternatives

    License model

    • Free • Open Source

    Application types

    Platforms

    • Linux
    • Online
    • Self-Hosted
    • OpenPGP
    Mailpile screenshot 1
    Discontinued

    The latest release (1.0.0rc6) was released in September 2019.

    Mailpile Features

    1.  OpenPGP
    2.  Web-Based
    3.  Encrypted Email
    4.  IMAP Support
    5.  POP3 Support

    Mailpile VS KMail

     

    • Mailpile is the most popular Self-Hosted alternative to KMail.

    • Mailpile is Free and Open SourceKMail is also Free and Open Source
  14. Sylpheed icon

    Sylpheed

     62 likes
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    Sylpheed is a simple, lightweight but featureful, and easy-to-use e-mail client (mailer, MUA).

    44 Sylpheed alternatives

    License model

    • Free • Open Source

    Application type

    Country of Origin

    • JP flagJapan

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD
    • PortableApps.com
    Main screen

    Properties

    1.  Lightweight

    Features

    1.  Portable
    2.  Gtk
    3.  POP3 Support
    4.  IMAP Support

    Sylpheed VS KMail

     
12 of 54 KMail alternatives