Claws Mail AlternativesEmail Clients & Calendar Apps like Claws Mail

Claws Mail is described as 'Email client (and news reader), based on GTK+, featuring' and is a very popular Email Client in the office & productivity category. There are more than 50 alternatives to Claws Mail for a variety of platforms, including Windows, Mac, Linux, Android and Web-based apps. The best Claws Mail alternative is Thunderbird, which is both free and Open Source. Other great apps like Claws Mail are K-9 Mail, Betterbird, Evolution and Microsoft Outlook.

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

Quick response Graceful, and sophisticated...

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More about Claws Mail
Claws Mail alternatives page was last updated Jan 29, 2024
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  1. Mailbird icon

    Mailbird

    Sponsored

    Streamline your email experience by managing multiple accounts, integrating apps like Slack and Google Calendar, and using AI-driven features like drafting and spam prevention. Customize your workspace with themes, notifications, and tools for improved productivity and a modern interface.

    64 Mailbird alternatives

    License model

    • Freemium • Proprietary

    Application type

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • Windows
    Mailbird screenshot 1

    Properties

    1.  Clean design

    Features

    1.  Sync Contacts
    2.  Dark Mode
    3.  Undo send
    4.  Email tracking
    5.  Unified inbox
    6.  GSuite Integration
    7. Slack icon  Slack integration
    8.  Multiple Account support
    9. Asana icon  Asana integration
    10.  Email template editor
    11.  Email Organizer
    12.  Spam Filter
  2. Thunderbird icon

    Thunderbird

     2467 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.

    85 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
    3.  Privacy focused

    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.  Built-in RSS reader
    9.  POP3 Support
    10.  Graphical User Interface
    11.  Dark Mode
    12. Google Calendar icon  Google Calendar integration

    Thunderbird VS Claws Mail

     
    Comments about Thunderbird as an Alternative to Claws Mail
    Mel Sharploof
    Negative May 7, 2022
    3

    Thunderbird is great if you want the tantalizing prospect of tons of power & customizability, and an equivalent amount of random bugs and troubleshooting to make sure it's not worth it.

    Jason Brown
    Negative Sep 1, 2023
    0

    I never got to random bugs and troubleshooting. TB always crashed before I got to that stage. Even on a 16gb debian machine with an SSD. Claws not as easy to use but much, much lighter. Wish they'd get rid of that creepy turkey foot logo tho.

    Claws Mail Icon
    Thunderbird icon

    • Most users think Thunderbird is a great Claws Mail alternative.

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

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

    • Thunderbird is Free and Open SourceClaws Mail is also Free and Open Source
    • Thunderbird is CustomizableClaws Mail is not according to our users
  4. K-9 Mail icon

    K-9 Mail

     355 likes
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    K-9 is an open source email client for Android with multi-folder sync, email signatures, Bcc-to-self, return-address configuration, keyboard shortcuts, Exchange Support, message flagging, IMAP deletes, saving attachments, configurable notifications and more.

    41 K-9 Mail alternatives

    License model

    • Free • Open Source

    Application type

    Country of Origin

    • International

    Platforms

    • Android
    • Android Tablet
    • F-Droid
    K-9 Mail screenshot 1

    Properties

    1.  Configurable
    2.  Privacy focused
    3.  Lightweight

    Features

    1.  Ad-free
    2.  IMAP Support
    3.  Multiple Account support
    4.  POP3 Support
    5.  One view multiple accounts
    6.  PGP Encryption
    7.  Unified inbox
    8.  End-to-End Encryption
    9.  Works Offline
    10.  Contacts
    11.  No Tracking
    12.  Dark Mode

    K-9 Mail VS Claws Mail

     
    Comments about K-9 Mail as an Alternative to Claws Mail
    Guest
    Positive Nov 12, 2018
    4

    Best open-source mail client for android!

    Claws Mail Icon
    K-9 Mail icon

    • Almost everyone thinks K-9 Mail is a great Claws Mail alternative.

    • K-9 Mail is the most popular Android Tablet alternative to Claws Mail.

    • K-9 Mail is Free and Open SourceClaws Mail is also Free and Open Source
    • K-9 Mail is Privacy focused and LightweightClaws Mail is not according to our users
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    Mailbird icon
    Mailbird

    Streamline your email experience by managing multiple accounts, integrating apps like Slack and Google Calendar, and using AI-driven features like drafting and spam prevention. Customize your workspace with themes, notifications,...

    https://www.getmailbird.com
    Learn More
  6. Betterbird icon

    Betterbird

     53 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

    Country of Origin

    • DE flagGermany
    • European Union flagEU

    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.  Spam Filter
    6.  Calendar Integration
    7.  No Tracking
    8.  Ad-free
    9.  SMTP Support
    10.  POP3 Support
    11.  Portable
    12.  IMAP Support

    Betterbird VS Claws Mail

     
  7. 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.

    72 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 Claws Mail

     
  8. 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.

    126 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 Claws Mail

     

    • Some users think Microsoft Outlook is a great Claws Mail alternative, some don't.

    • Microsoft Outlook is the most popular Web-based, iPhone & iPad alternative to Claws Mail.

    • Microsoft Outlook is the most popular commercial alternative to Claws Mail.

    • Microsoft Outlook is Paid and ProprietaryClaws Mail is Free and Open Source
  10. FairEmail icon

    FairEmail

     79 likes
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    Open-source, privacy-focused email client offering features such as encryption via OpenPGP and S/MIME, unlimited accounts, a unified inbox, customizable settings, and reformatted emails to prevent phishing. Supports two-way synchronization and provides Pro features for additional customization.

    43 FairEmail alternatives

    License model

    • Freemium • Open Source

    Application type

    Country of Origin

    • NL flagNetherlands
    • European Union flagEU

    Platforms

    • Android
    • Android Tablet
    • F-Droid
    Compose message view.
    Setup screen.
    Messages view with dark theme.

    Properties

    1.  Privacy focused
    2.  Customizable
    3.  Lightweight

    Features

    1.  Multiple Account support
    2.  Email Notifications
    3.  PGP Encryption
    4.  Extensive settings menu
    5.  IMAP Support
    6.  Notifications
    7.  No Tracking
    8.  Works Offline
    9.  Ad-free
    10.  Unified inbox
    11.  Dark Mode
    12.  S/MIME Support

    FairEmail VS Claws Mail

     
  11. Spark Mail icon

    Spark Mail

     131 likes
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    E-mail app with all the great features: swipes (long/short), snooze, add (multiple) attachments from the cloud, support for various e-mail services and more.

    61 Spark Mail alternatives

    License model

    • Freemium • Proprietary

    Application types

    Country of Origin

    • UA flagUkraine

    Platforms

    • Mac
    • Windows
    • Android
    • iPhone
    • iPad
    • Apple Watch
    Spark Mail screenshot 1

    Top Spark Mail Features

    1.  Multiple Account support
    2.  Email Scheduling
    3.  Snooze Mail
    4.  Cloud Sync
    5.  Calendar Integration
    6.  Dark Mode
    7.  Email Organizer
    8.  Unified inbox
    9.  Works Offline
    10.  Mail Filtering
    11.  Ad-free
    12. Google Calendar icon  Sync with Google Calendar

    Spark Mail VS Claws Mail

     
  12. eM Client icon

    eM Client

     231 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 Claws Mail

     
  13. Mailspring icon

    Mailspring

     107 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.

    42 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.  Ad-free
    7.  Built-in translation
    8.  Theme Customization
    9.  IMAP Support
    10.  Extensible by Plugins/Extensions
    11.  Email Organizer
    12.  Keyboard Shortcuts

    Mailspring VS Claws Mail

     
  14. Reeder icon

    Reeder

     322 likes
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    Reeder is your all-in-one inbox for reading, watching and listening to content from various sources.

    286 Reeder alternatives

    License model

    Application types

    Country of Origin

    • CH flagSwitzerland

    Platforms

    • Mac
    • iPhone
    • iPad
    Reeder screenshot 1

    Properties

    1.  Lightweight

    Features

    1.  Dark Mode
    2.  Cloud Sync
    3.  Import/Export OPML Feeds
    4.  Feedly client
    5.  Ad-free
    6.  Multiple Account support
    7.  Offline Reading
    8.  Synchronization
    9.  Sync with iCloud

    Reeder VS Claws Mail

     
  15. 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 Claws Mail

     
  16. Apple Mail icon

    Apple Mail

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

    72 Apple Mail alternatives

    License model

    • Free • Proprietary

    Application type

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • iPhone
    • iPad
    • Online
    • Apple Watch
    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.  CardDAV Support
    7.  Exchange
    8.  CalDAV Support
    9.  Rich text editing
    10.  Encrypted Email

    Apple Mail VS Claws Mail

     
    Comments about Apple Mail as an Alternative to Claws Mail
    Mel Sharploof
    May 7, 2022
    0

    "The best way to manage email on a Mac, according to Apple." Which is refreshing, since the makers of most email apps don't claim that their app is the best.

    Claws Mail Icon
    Apple Mail icon
    • Apple Mail is Free and ProprietaryClaws Mail is Free and Open Source
13 of 62 Claws Mail alternatives