Alternatives to Postbox for all platforms with any license

  • Thunderbird icon

    Thunderbird

    Thunderbird is a free, open source, cross-platform e-mail, news and instant messaging client. The project strategy is modeled after Mozilla Firefox. It supports POP (storing mail locally on your hard drive so that it can be accessed...

    Open Source Mac Windows Linux BSD PortableApps.com Haiku

  • Inbox by Gmail icon

    Inbox by Gmail

    Built on everything that we've learned from Gmail, Inbox is a fresh start that goes beyond email to help you get back to what matters. Bundles, because some messages just belong together. Promotions are now neatly...

    Free Web / Cloud Android iPhone Chrome OS iPad Chrome

    No features added Add a feature
    • Inbox by Gmail is for Google Email ONLY. Not for your other IMAP, POP3 or Exchange email services. Guest • Oct 2016 Disagree   Agree
  • Apple Mail icon

    Apple Mail

    There’s big news attached. The best way to manage email on a Mac gets even better with OS X Yosemite.

    Free Mac iPhone iPad

    No features added Add a feature
  • Mailbird icon

    Mailbird

    Mailbird is more than just another email client - It's an all-in-one communication platform for email, contacts, calendar, apps, task management, video meetings and much more. Try it free, today.

    Freemium Windows

    No features added Add a feature
  • eM Client icon

    eM Client

    eM Client is a full featured e-mail client with a modern and easy to use interface. eM Client also offers calendar, tasks, contacts and chat.

    Free Personal Windows

  • Evolution icon

    Evolution

    Evolution is the official personal information manager and workgroup information management tool for GNOME. It combines e-mail, calendar, address book, and task list management functions. It has been an official part of GNOME since...

    Open Source Linux BSD GNOME

  • Geary icon

    Geary

    Geary is an email application built for GNOME 3. It allows you to read and send email with a simple, modern interface.

    Open Source Linux BSD GNOME

    No features added Add a feature
  • Nylas Mail icon

    Nylas Mail

    Nylas Mail is an email client designed to be friendly and easy to use but also powerful and highly extensible. It works "out of the box" with all the major email services like Gmail, Yahoo and iCloud and the lightweight...

    Freemium Mac Windows Linux Web / Cloud Self-Hosted

  • Claws Mail icon

    Claws Mail

    Claws Mail is an email client (and news reader), based on GTK+, featuring Quick response Graceful, and sophisticated interface Easy configuration, intuitive operation Abundant features Extensibility ...

    Open Source Windows Linux BSD Xfce

  • EssentialPIM icon

    EssentialPIM

    EssentialPIM lets you manage appointments, tasks, notes, contacts, password entries and email messages across multiple devices and cloud applications. PIM stands for Personal Information Manager, and it allows you to keep all you...

    Freemium Windows Android iPhone

    No features added Add a feature
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  • Sylpheed icon

    Sylpheed

    Sylpheed is a simple, lightweight but featureful, and easy-to-use e-mail client (mailer, MUA). Sylpheed runs on many systems such as Windows, Linux, BSD, Mac OS X and other Unix-like systems. Sylpheed uses GTK+ GUI toolkit. The...

    Open Source Mac Windows Linux BSD PortableApps.com

    No features added Add a feature
  • Inky icon

    Inky

    End-to-End Encrypted Email that is a Delight to Use, on all devices, with all email accounts.

    Commercial Mac Windows Android iPhone Android Tablet iPad

    No features added Add a feature
  • Mutt icon

    Mutt

    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...

    Open Source Mac Windows Linux Xfce

  • Zimbra Desktop icon

    Zimbra Desktop

    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. Zimbra...

    Free Personal Mac Windows Linux

    No features added Add a feature
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  • Spark icon

    Spark

    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.

    Free Mac iPhone iPad Apple Watch

    No features added Add a feature
  • Trojitá icon

    Trojitá

    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.

    Open Source Windows Linux

  • FossaMail icon

    FossaMail

    FossaMail is an Open Source, Mozilla Thunderbird -based mail, news and chat client for Windows and Linux, brought to you by the Pale Moon developers. FossaMail: Is built from source with compiler optimizations...

    Open Source Windows Linux

    No features added Add a feature
  • Mail icon

    Mail

    Windows 10 has Mail and Calendar apps already built in. With the Mail application you can now easily see all message from your favorite people, more clearly organize social updates and...

    Free Windows

  • Kontact - KMail icon

    Kontact - KMail

    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...

    Open Source Mac Windows Linux BSD

    No features added Add a feature
  • Kiwi for Gmail icon

    Kiwi for Gmail

    Kiwi for Gmail (formerly Gmail for Mac) turns Gmail into a full-powered desktop email client. No one wants to use Gmail in the browser on their phone, and we felt they shouldn't have to on the Mac either. Kiwi for Gmail is a...

    Freemium Mac

  • ALTO Mail icon

    ALTO Mail

    Alto Mail makes managing your email easy again. Add all your mail accounts to our app (including Gmail, Outlook, Yahoo!, AOL Mail, iCloud, Hotmail and others) and see all of your email in one place. Beyond the typical inbox display...

    Free Web / Cloud Android iPhone Android Tablet iPad

  • Unibox icon

    Unibox

    Unibox is a people centric email client that organizes your messages by person. It avoids having email like a to-do list. Features: - Unibox supports IMAP servers: Gmail, iCloud, me.com, Yahoo!, Exchange if IMAP is enabled...

    Commercial Mac

  • Kontact icon

    Kontact

    Kontact is the integrated Personal Information Manager of KDE. Kontact suite unites mature and proven KDE PIM applications under one roof. Thanks to the powerful KPart technology, existing applications are seamlessly integrated...

    Open Source Windows Linux

    No features added Add a feature
  • TypeApp icon

    TypeApp

    TypeApp is an all-free, beautifully designed, universal email app, capable of managing unlimited number of mail accounts from various providers, allowing for smart push notifications while enabling personalization across multiple...

    Free Personal Android iPhone Android Tablet iPad Android Wear Kindle Fire

  • MailMate icon

    MailMate

    MailMate is an IMAP email client for Mac OS X featuring extensive keyboard control, Markdown supported email composition.

    Commercial Mac

  • Email.biz icon

    Email.biz

    Indian Webmail service allowing people to sign up for an @email.biz mail account. Cloud based Login and Multiple Login System give you safe and secure access to your POP / IMAP email accounts. Now access your email with any Web...

    Free Web / Cloud

    No features added Add a feature
  • Mulberry icon

    Mulberry

    Mulberry is a powerful, easy to use electronic mail (email) and calendar program that allows you to send, access, and manage email and calendars. Mulberry also helps you manage other related information, such as contact information. ...

    Open Source Mac Windows Linux

    • Discontinued The project is no longer developed. Last version, 4.0.8, released in February 2007, can be still downloaded from the official website.

Postbox Comments

As already told, its better or simply more complete than Mo ...

Comment by Pr1me
about Postbox Jun 2011

As already told, its better or simply more complete than Mozilla Thunderbird but (to me) its not worth the 40 bucks. That said I think that it could be a good investment if you need an email app for your company, but for personal use I say nah.

Reply

Postbox has some really nice features beyond what Thunderbi ...

Comment by wfaulk
about Postbox Jun 2011

Postbox has some really nice features beyond what Thunderbird can do. I've been using it for about two months now and have mostly enjoyed using it. There are a few bugs and UI quirks, but they should be worked out eventually. That said, they're now starting to charge for it. And they're charging $40 for it. It's simply not worth that much. $15? Sure. But not $40.

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It's good but now they've started charging which seems fool ...

Comment by campbell2644
about Postbox Jun 2011

It's good but now they've started charging which seems foolish when Thunderbird,Sea Monkey & Evolution are free and of comparable quality

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Great alternative if you've been disappointed by the slow d ...

Comment by Lummo
about Postbox Jun 2011

Great alternative if you've been disappointed by the slow development of Thunderbird. The search functionality is great - allowing you to quickly find previous emails from the same person, or all the attachments you've received in the last few months. Another great feature is the conversation view which shows you the chain of replies, similar to Gmail. Really enjoying Postbox at the moment after using Thunderbird 2 for a long time and even trying the Thunderbird 3 betas.

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