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Kube Alternatives

Kube is described as 'modern communication and collaboration client built with QtQuick on top of a high performance, low resource usage core. It provides online and offline access to all your mail, contacts, calendars, notes, todo's and more' and is a Email Client in the office & productivity category. There are more than 25 alternatives to Kube for a variety of platforms, including Windows, Mac, Linux, Android and iPhone. The best alternative is Thunderbird, which is both free and Open Source. Other great apps like Kube are K-9 Mail, Microsoft Office Outlook, FairEmail and Mailspring.

Kube alternatives are mainly Email Clients but may also be Calendar Apps or Email Organizers. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of Kube.
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Kube iconKube
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  • FreeOpen Source
  • Mac
  • Linux

Kube is a modern communication and collaboration client built with QtQuick on top of a high performance, low resource usage...

Learn more about Kube

  1. Mailbird helps individuals and businesses manage emails in one place. This allows you to simplify your workflows. Therefore, spend more time on important tasks. Moreover, 9 in 10 of our customers describe our interface as “intuitive” and beautiful.

    ⚫︎ Dark ModeMailbird supports dark mode for comfortable usage in low light conditions.
    ⚫︎ Unified inboxView e-mails (or similar) from all accounts in one unified view with Mailbird.
    ⚫︎ Multiple Account supportMailbird support multiple accounts without the need to logout and login
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    Screenshot
  2. Thunderbird is a free, open source, cross-platform e-mail, news and instant messaging client. The project strategy is modeled after Mozilla Firefox.

    ⚫︎ Extensible by Plugins/ExtensionsThunderbird can be extended with add-ons, plugins and extensions.
    ⚫︎ Multiple Account supportThunderbird support multiple accounts without the need to logout and login
    ⚫︎ Dark ModeThunderbird supports dark mode for comfortable usage in low light conditions.
    ⚫︎ CustomizableThunderbird is easy to customize with themes or similar features.
    ⚫︎ Integrated Password ManagerThunderbird lets you access all the passwords you’ve saved across your different devices.
    ⚫︎ Import/Export OPML FeedsImport and export your feed subscriptions into OPML format with Thunderbird.
    ⚫︎ PortableThunderbird can be used from a USB stick or similar with no prior installation.
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    Screenshot


  3. 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.

    ⚫︎ Ad-freeK-9 Mail doesn't contain any form of external advertising.
    ⚫︎ Privacy focusedK-9 Mail is considered a privacy friendly alternative.
    ⚫︎ Multiple Account supportK-9 Mail support multiple accounts without the need to logout and login
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  4. Microsoft Outlook, part of the Microsoft Office Suite (not to be confused with Microsoft Outlook Express), is a personal information manager that lets you manage your e-mail, calendar, contacts, and tasks.

    ⚫︎ Unified inboxView e-mails (or similar) from all accounts in one unified view with Microsoft Office Outlook.
    ⚫︎ Multiple Account supportMicrosoft Office Outlook support multiple accounts without the need to logout and login
    ⚫︎ Dark ModeMicrosoft Office Outlook supports dark mode for comfortable usage in low light conditions.
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    Outlook 365 on Windows
  5. FairEmail is a privacy-focused email client with a setup wizard that helpfully walks you through the steps to use it with any email provider. There are many privacy settings including encryption via OpenPGP and S/MIME and reformatted emails to avoid phishing.

    ⚫︎ Privacy focusedFairEmail is considered a privacy friendly alternative.
    ⚫︎ Multiple Account supportFairEmail support multiple accounts without the need to logout and login
    ⚫︎ CustomizableFairEmail is easy to customize with themes or similar features.
    ⚫︎ Block TrackersFairEmail has a feature to block trackers from tracking you.
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    Compose message view.


  6. 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.

    ⚫︎ Unified inboxView e-mails (or similar) from all accounts in one unified view with Mailspring.
    ⚫︎ Dark ModeMailspring supports dark mode for comfortable usage in low light conditions.
    ⚫︎ Multiple Account supportMailspring support multiple accounts without the need to logout and login
    ⚫︎ CustomizableMailspring is easy to customize with themes or similar features.
    ⚫︎ Ad-freeMailspring doesn't contain any form of external advertising.
    ⚫︎ Extensible by Plugins/ExtensionsMailspring can be extended with add-ons, plugins and extensions.
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    Clean design with integrated search and swipe gestures
  7. eM Client is a full featured email client with a clean and efficient user interface.

    ⚫︎ Multiple Account supporteM Client support multiple accounts without the need to logout and login
    ⚫︎ Dark ModeeM Client supports dark mode for comfortable usage in low light conditions.
    ⚫︎ Unified inboxView e-mails (or similar) from all accounts in one unified view with eM Client.
    ⚫︎ Cloud SyncSync your data (notes, documents, bookmarks, etc.) across your different devices and to the cloud.
    ⚫︎ Sync with Google CalendareM Client can be synchronized with Google Calendar
    ⚫︎ Automatic BackupeM Client will automatically back up your data periodically.
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    eM Client: Inbox view
  8. 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.

    ⚫︎ Multiple Account supportSpark Mail support multiple accounts without the need to logout and login
    ⚫︎ Sync Across DevicesSpark Mail can sync your data across devices like your phone, desktop and tablet
    ⚫︎ Dark ModeSpark Mail supports dark mode for comfortable usage in low light conditions.
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    Screenshot
  9. Evolution is a personal information management application that provides integrated mail, calendaring, address book and task list functionality.

    ⚫︎ Calendar ViewEvolution has a built-in calendar view to have a clear overview of your content over time.
    ⚫︎ Multiple Account supportEvolution support multiple accounts without the need to logout and login
    ⚫︎ Sync with Google CalendarEvolution can be synchronized with Google Calendar
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    Mail
  10. Mailbird helps individuals and businesses manage emails in one place. This allows you to simplify your workflows. Therefore, spend more time on important tasks. Moreover, 9 in 10 of our customers describe our interface as “intuitive” and beautiful.

    ⚫︎ Dark ModeMailbird supports dark mode for comfortable usage in low light conditions.
    ⚫︎ Unified inboxView e-mails (or similar) from all accounts in one unified view with Mailbird.
    ⚫︎ Multiple Account supportMailbird support multiple accounts without the need to logout and login
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    Screenshot
Showing 10 of 35 alternatives