Open Source Airmail AlternativesEmail Clients and other similar apps like Airmail

The best open source alternative to Airmail is Thunderbird. If that doesn't suit you, our users have ranked more than 50 alternatives to Airmail and many of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Airmail are K-9 Mail, Evolution, FairEmail and Mailspring.

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Airmail alternatives page was last updated

Alternatives list

  1. Thunderbird icon
     2526 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.

    86 Thunderbird alternatives

    Cost / License

    • Free
    • Open Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • BSD
    • AppImageHub
    • Snapcraft
    • Flathub
    • PortableApps.com
    • F-Droid
    • Haiku
    • Homebrew
    • Chocolatey
     
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    • Some users think Thunderbird is a great Airmail alternative, some don't.

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

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

    • Thunderbird is Free and Open SourceAirmail is Paid and Proprietary
    • Thunderbird is Privacy focusedAirmail is not according to our users
  2. K-9 Mail icon
     366 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.

    42 K-9 Mail alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Android
    • Android Tablet
    • F-Droid
     
    • K-9 Mail is the most popular Android Tablet alternative to Airmail.

    • K-9 Mail is Free and Open SourceAirmail is Paid and Proprietary
    • K-9 Mail is Privacy focusedAirmail is not according to our users
  3. Evolution icon
     205 likes
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    Evolution is a personal information management application that provides integrated mail, calendaring, address book and task list functionality.

    69 Evolution alternatives

    Cost / License

    • Free
    • Open Source

    Application types

    Platforms

    • Linux
    • BSD
    • Flathub
    • S/MIME
    • GNOME
    • OpenPGP
     
  4. FairEmail icon
     87 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

    Cost / License

    • Freemium (Pay once)
    • Open Source

    Application type

    Platforms

    • Android
    • Android Tablet
    • F-Droid
     
  5. Mailspring icon
     113 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.

    43 Mailspring alternatives

    Cost / License

    • Freemium (Subscription)
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Arch Linux
    • Fedora
    • Ubuntu
     
  6. Geary icon
     105 likes
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    Geary is an email application built around conversations, for the GNOME 3 desktop.

    46 Geary alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Linux
    • BSD
    • Flathub
    • GNOME
    • Flatpak
     
  7. Sylpheed icon
     62 likes
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    Sylpheed is a simple, lightweight but featureful, and easy-to-use e-mail client (mailer, MUA).

    Cost / License

    • Free
    • Open Source

    Application type

    Alerts

    • Discontinued

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD
    • PortableApps.com
     
  8. KMail icon
     49 likes
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    KMail is the email component of Kontact, the integrated personal information manager of KDE. Kontact is a personal information manager and groupware software suite for KDE. It supports calendars, contacts, notes, to-do lists, news, and email.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Linux
    • BSD
     
  9. Mutt icon
     68 likes
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    Mutt is a small but very powerful text-based mail client for Unix operating systems. Some of its features are: color support, message threading, MIME support (including RFC2047 support for encoded headers), PGP/MIME (RFC2015), various features to support mailing lists, including...

    51 Mutt alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Xfce
     
  10. Nextcloud Mail icon
     11 likes
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    💌 Mail app for Nextcloud.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Online
    • Self-Hosted
    • Nextcloud
     
    • Nextcloud Mail is the most popular Self-Hosted alternative to Airmail.

    • Nextcloud Mail is Free and Open SourceAirmail is Paid and Proprietary
    • Nextcloud Mail is Privacy focusedAirmail is not according to our users
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