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 Open Source, Linux, iPhone, Android, Windows, Kindle Fire and Mac. 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. EasyEmail Client icon

    EasyEmail Client

     Like

    Email client and email notifier in one. Allows you to send, receive, and manage e-mails, get notifications of incoming email messages from your buddies, coworkers or family members online. Contains free email sender interface ready to cooperate with other software via XML, CSV...

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Platforms

    • Windows
    E-mail notification side panel with your own list of buddies.
     
  2. EML Tool icon

    EML Tool

     Like

    A free online EML viewer that opens .eml and .msg email files directly in the browser: message body, full headers and attachments. Parsing is 100% local (RFC 822/MIME), HTML bodies render inside a sandboxed iframe, and header checks are shown for triage.

    Cost / License

    • Free
    • Proprietary

    Platforms

    • Google Chrome
    EML Tool screenshot 1
     
  4. Sterna Mail icon

    Sterna Mail

     Like

    Sterna Mail is a private, native Android email client built for JMAP, the faster successor to IMAP, with full support for classic IMAP/SMTP too. You pick the protocol when you add an account, so it works with JMAP servers like Stalwart as well as any standard mail provider.

    Cost / License

    Platforms

    • Android
    Sterna Mail screenshot 1
     
  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. Pelton icon

    Pelton

     1 like

    Pelton is a free, open-source email client that searches your whole mailbox locally, online or off. No telemetry, no servers of ours. Your mail stays on your machine.

    Cost / License

    Platforms

    • Windows
    • Mac
    • Linux
    Pelton screenshot 1
     
  8. Marco icon

    Marco

     Like

    A privacy-first, offline-first email client that puts you back in control. No ads, no tracking, no compromises.

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Platforms

    • Mac
    • Online
    • iPhone
    • iPad
    Marco screenshot 1
     
  9. MailSignal icon

    MailSignal

     Like

    Lightweight Windows taskbar app that shows unread email counts from all your Gmail and Microsoft 365 accounts, no browser or Outlook required.

    Cost / License

    • Freemium
    • Proprietary

    Platforms

    • Windows
    Main screen
     
  10. PREDIMAIL icon

    PREDIMAIL

     Like

    Sort, reply, and organize your inbox using a smart knowledge base for accurate, personalized answers. Save time and boost productivity with secure, automated email management.

    Cost / License

    • Freemium
    • Proprietary

    Application types

    Platforms

    • Online
    • Software as a Service (SaaS)
    AI classificaltion & Messages filtering
     
  11. QQ Mail icon

    QQ Mail

     Like

    Full support for general mail protocols to help you manage all your mailboxes on your phone.

    65 QQ Mail alternatives

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Platforms

    • Android
    • iPhone
    • Apple Watch
    QQ Mail screenshot 1
     
  12. MyEzInbox icon

    MyEzInbox

     Like

    MyEzInbox is an AI-enabled edit-anything email client for Windows. Supports encryption. Free for personal use.

    Cost / License

    • Free Personal
    • Proprietary

    Application type

    Platforms

    • Windows
    MyEzInbox screenshot 1
     
  13. Xylo AI icon

    Xylo AI

     1 like

    Experience seamless communication with Xylo AI email assistant, the ultimate tool powered by cutting-edge Generative AI and Social Psychology.

    Cost / License

    • Paid
    • Proprietary

    Application type

    Platforms

    • Online
    • Microsoft Outlook
    • Windows
    • Software as a Service (SaaS)
    Xylo AI screenshot 1
     
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