Thunderbird Alternatives

Thunderbird is described as 'Cross-platform email client providing POP/IMAP support, robust filtering, multiple accounts, and chat. Extendable via add-ons with RSS/Atom, etc' and is a leading Email Client in the office & productivity category. There are more than 50 alternatives to Thunderbird for a variety of platforms, including Windows, Mac, Linux, Android and iPhone apps. The best Thunderbird alternative is K-9 Mail, which is both free and Open Source. Other great apps like Thunderbird are Claws Mail, Evolution, Betterbird and SeaMonkey.

filter to find the best alternatives

Thunderbird alternatives are mainly Email Clients, but if you're looking for Calendar Apps or Contact Managers you can filter on that. Other popular filters include Linux, Open Source, iPhone, Free, Windows + Open Source, Android and Kindle Fire. You can also filter by region, for example EU-based alternatives if you prefer software developed in the European Union. These are just examples - use the filter bar below to find more specific alternatives to Thunderbird.
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Alternatives list

  1. Spike icon

    Spike

     34 likes
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    Transform your email inbox into a collaborative workspace with Spike. Enjoy integrated chat-like emails, tasks, collaborative notes, and group projects. Seamlessly manage multiple accounts, organize priorities, and schedule meetings across devices.

    Cost / License

    • Freemium (Subscription)
    • Proprietary

    Application type

    Platforms

    • Mac
    • Windows
    • Online
    • Android
    • iPhone
    • Chrome OS
    • Android Tablet
    • iPad
    • Software as a Service (SaaS)
    • Meta Quest
    One powerful space for all your work needs—get email, chat, notes, tasks, calendar and audio/video calls all from your inbox
     
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    1
    Comments about Spike as an Alternative to Thunderbird
    Guest
    Positive
    1

    Native onlye for Android, iOS, Windows and Mac, not a Linux app

    Review by a new / low-activity user.
    Thunderbird Icon
    Spike icon

    • Spike is the most popular SaaS alternative to Thunderbird.

    • Spike is Freemium and ProprietaryThunderbird is Free and Open Source
  2. Zimbra Desktop icon

    Zimbra Desktop

     32 likes
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    The free Zimbra Desktop client allows you to meld the online and offline worlds – storing and synching your email, calendar, contacts, files and documents in the cloud, yet having them locally accessible when on the road.

    54 Zimbra Desktop alternatives

    Cost / License

    • Free Personal
    • Proprietary

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    Zimbra Desktop screenshot 1
     
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    2
    8
    Comments about Zimbra Desktop as an Alternative to Thunderbird
    michael111
    Positive
    0

    tried it over a few weeks, all you need for office users

    Guest
    Positive
    -4

    This one goes beyond the features and qualities of Thunderbird which is the very reason I am looking for an alternative!

    Review by a new / low-activity user.
    Thunderbird Icon
    Zimbra Desktop icon

    • Most users think Zimbra Desktop is a great Thunderbird alternative.

    • Zimbra Desktop is Free Personal and ProprietaryThunderbird is Free and Open Source
  4. Trojitá icon

    Trojitá

     17 likes
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    Trojitá, is a fast Qt IMAP e-mail client that respects open standards and facilitates modern technologies. Trojitá values vendor-neutrality that IMAP provides and is committed to be as interoperable as possible.

    Cost / License

    • Free
    • Open Source

    Application type

    Alerts

    • Discontinued

    Platforms

    • Windows
    • Linux
    Home
     
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  5. Ad
    Screenshot
    Superhuman Mail icon
    Superhuman Mail

    Productivity-centered email application streamlines inbox management, uses AI for drafting responses, automates snippets, summarizes conversations, enables timely sends, integrates calendar and CRM, and includes collaborative fea...

    https://superhuman.com
    Learn More
  6. Airmail icon

    Airmail

     73 likes
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    Engineered for iOS, macOS, and watchOS, this fast mail client supports multiple account types, custom actions, Smart Inbox filtering, unified inbox, privacy mode, email scheduling, snooze, third-party app integration, flexible personalization, and advanced workflow tools.

    66 Airmail alternatives

    Cost / License

    • Pay once
    • Proprietary

    Application type

    Platforms

    • Mac
    • iPhone
    • iPad
    • Apple Watch
    Airmail screenshot 1
     
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    6
  7. Missive icon

    Missive

     16 likes
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    Collaborative email and threaded group chat for productive teams. A single app for all your internal and external communication.

    Cost / License

    • Subscription
    • Proprietary

    Application types

    Platforms

    • Mac
    • Windows
    • Online
    • Android
    • iPhone
    The perfect shared inbox!
     
  8. aerc icon

    aerc

     9 likes
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    aerc is an email client that runs in your terminal. It's highly efficient and extensible, perfect for the discerning hacker.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Linux
    HTML support
     
  10. Nextcloud Mail icon

    Nextcloud Mail

     11 likes
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    💌 Mail app for Nextcloud.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Online
    • Self-Hosted
    • Nextcloud
     
  11. Foxmail icon

    Foxmail

     19 likes
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    Foxmail is a free POP3 and IMAP4 e-mail client in English and Chinese for Windows systems.

    Cost / License

    • Free
    • Proprietary

    Application types

    Platforms

    • Mac
    • Windows
    Foxmail screenshot 1
     
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    1
    Comments about Foxmail as an Alternative to Thunderbird
    Guest
    Positive
    -2

    The UI interface is greater, it has many great functions like notes, calendars, tags, etc. It could use POP, IMAP and Exchange accounts.

    Review by a new / low-activity user.
    Thunderbird Icon
    Foxmail icon

    • Most users think Foxmail is a great Thunderbird alternative.

    • Foxmail is Free and ProprietaryThunderbird is Free and Open Source
  12. Shortwave icon

    Shortwave

     15 likes
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    Shortwave is an email app that takes the pain out of managing your inbox, making it effortless to stay organized, productive, and responsive.

    Cost / License

    • Freemium (Subscription)
    • Proprietary

    Application type

    Platforms

    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Gmail
    Shortwave screenshot 1
    Shortwave screenshot 2
    Shortwave screenshot 3
     
  13. LucaMail icon

    LucaMail

     9 likes
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    LucaMail is an open source, cross-platform email client. LucaMail is developed to provide cross-platform alternative to Email Clients that are really exists. LucaMail focuses on modern technologies as well as maintaining a user-friendly UI.

    Cost / License

    • Free
    • Open Source

    Application type

    Alerts

    • Discontinued

    Platforms

    • Mac
    • Windows
    • Linux
    LucaMail screenshot 1
     
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    1
    Comments about LucaMail as an Alternative to Thunderbird
    sp4mmed
    Negative
    -1

    The lack of POP support means this is useless for my purposes. Since Thunderbird DOES support POP this means LucaMail is NOT an alternative.

    Thunderbird Icon
    LucaMail icon
    • LucaMail is Free and Open SourceThunderbird is also Free and Open Source
  14. Polymail icon

    Polymail

     22 likes
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    The most powerful platform for email productivity in a beautiful native app — on desktop and mobile.

    Cost / License

    • Subscription
    • Proprietary

    Application type

    Platforms

    • Mac
    • Windows
    • Online
    • iPhone
    • iPad
    Polymail screenshot 1
    Polymail screenshot 2
    Polymail screenshot 3
     
  15. HCL Domino icon

    HCL Domino

     6 likes
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    An enterprise application server that integrates information into a single workspace, integrates also a full mail server

    Cost / License

    • Pay once
    • Proprietary

    Application types

    Platforms

    • Mac
    • Windows
    • Online
    HCL Domino screenshot 1
     
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