Postbox Alternatives and Similar Software

It's awesome that you want to help us remove incorrect alternatives. Feel free to report more applications below. But keep in mind that the only reason for an alternative not to be valid is if it doesn't share common functionality with Postbox. It might not be a good choice according to you but it’s still an alternative. Read more about our thoughts about alternatives here.

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817likes

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Thunderbird
Open Source by Mozilla |
Not an alternative?
Thunderbird is a free, open source, cross-platform e-mail, news and instant messaging client. The project strategy is modeled after Mozilla Firefox. Advantages compared with the most popular web e-mail...

Office & Productivity, Social portable An unofficial portable version is available from PortableApps.com, instant-messaging, imap, tabbed-interface +4 more, email-client, chat-client, extendable, smime
141likes

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Microsoft Office Outlook
Commercial by Microsoft |
- Mac
- Windows
Not an alternative?
Outlook, part of the Microsoft Office suite, is a personal information manager that lets you not only send, receive, and manage e-mail, but also manage your calendar and contacts, such as friends and business...

Office & Productivity calendar, contacts, personal-information-manager +4 more, email-client, microsoft-office-suite, smime, exchange-client
119likes

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Apple Mail
Free by Apple |
- Mac
Not an alternative?
Apple Mail changes the way you interact with your email every day. Mail displays your messages and open email side by side in a widescreen, two-column view. The favorites bar below the toolbar works much...

Office & Productivity email-client, conversation, lion, thread
80likes

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Evolution
Open Source by The GNOME Project |
Not an alternative?
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...

Office & Productivity calendar, gnome, imap, email-client, pop3 +1 more, exchange-client
65likes

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Sparrow
Commercial by Sparrow SAS |
- Mac, iPhone
Not an alternative?
Sparrow is a minimalist mail application for Mac. It was designed to keep things simple and efficient. No fancy stuff here... just your mail and nothing else. Sparrow supports all IMAP accounts, including:...

Office & Productivity gmail, email-client, lightweight, growl-integration
81likes

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eM client
Free* by eM Client Inc. |
- Windows
Not an alternative?
eM Client is a Windows based email client, supporting calendars, contacts and tasks. It supports POP3 and IMAP4 servers as well as chat protocols (e.g. XMPP). Skype is supported as long as the user has...

Office & Productivity calendar, imap, email-client, pop3, smime
40likes

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Windows Live Mail
Free by Microsoft |
- Windows
Not an alternative?
Supports multiple POP3 and IMAP4 mail accounts as well as calendar.

Office & Productivity email-client, windows-live, smime
23likes

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EssentialPIM
Free by EssentialPIM |
- Windows
Not an alternative?
PIM stands for Personal Information Manager, and it allows you to keep all you information in electronic form. All your appointments, tasks, to do lists, notes and contacts are stored in a graphical and easily...

Office & Productivity portable EssentialPIM Portable (both Free and Pro editions) is U3-compliant, notes, calendar, tasks, pim +1 more, contact-management
9likes

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Airmail
Free by Bloop |
- Mac
Not an alternative?
Airmail is a lightweight and lightning fast mail client for Mac. It is currently in public beta; only Gmail accounts are supported.

Office & Productivity gmail, email-client, gmail-client
24likes

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Email.biz
Free by GuavaSofts Pvt Ltd |
- Online
Not an alternative?
Indian Webmail service allowing people to sign up for an @email.biz mail account.

Office & Productivity webmail
22likes

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Zimbra Desktop
Free by Zimbra |
Not an alternative?
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...

Office & Productivity calendar, task-list, email-client, email-checker
16likes

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Mutt
Open Source |
Not an alternative?
Mutt is a small but very powerful text-based mail client for Unix operating systems.

Office & Productivity command-line, imap, pop3, nntp
22likes

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Banckle Email
Commercial by Usman Sarfraz |
- Mac, iPad
- Windows
- Online
Not an alternative?
Banckle Email is a business email solution supporting multiple protocols, video email, text and video chat. Considering your business needs, the email communications are SSL secured and its advanced search...

Office & Productivity, Social web-based, webmail, email-client, video-chat +6 more, mail-server, email-server, webmail-service-provider, ldap, webmail-server, business-email
29likes

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Inky
Free by Arcode Corporation |
- Mac
- Windows
Not an alternative?
Inky pulls together all your personal and work email accounts into one place. By providing simple tools to manage your inbox, Inky helps you get things done. Attention: Inky stores your email passwords on...

Office & Productivity email-client, inbox-management, connect-web-accounts
16likes

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Sylpheed
Open Source by Hiroyuki Yamamoto |
Not an alternative?
Sylpheed is a simple, lightweight but featureful, and easy-to-use e-mail client (mailer, MUA). Sylpheed runs on Unix-like systems such as Linux, BSD, and Mac OS X. It also supports Windows. Sylpheed uses...

Office & Productivity gtk, mail-client, email-client, mailer, mua
14likes

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Kontact - KMail
Open Source by KDE |
Not an alternative?
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,...

Office & Productivity email-client, kontact-component
13likes

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Mailplane
Commercial by uncomplex ltd |
- Mac
Not an alternative?
You like threaded conversations, googling your inbox, and you prefer labels over folders. You really love Gmail. If yes: You've come to the right place. Continue to use the Gmail web interface you know...

Office & Productivity email-client, gmail-client, desktop-client
21likes

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The Bat
Commercial by RITLabs |
- Windows
Not an alternative?
The shareware e-mail client has been developed by a Moldavian company. The Bat supports IMAP and POP3 and has integrated S/MIME as well as PGP and supports external GPG. The internal PGP supports only...

Office & Productivity portable portable Version is available only for Pro version users (Portable version is called Voyager), email-client, imap, pop3, gpg, pgp, smime
9likes

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Mailbox
Free by Orchestra, Inc. |
- iPhone, iPad
Not an alternative?
Mailbox is a completely redesigned inbox that makes email light, fast, and mobile-friendly. Quickly swipe messages to your archive or trash. Scan an entire conversation at once with chat-like organization....

Office & Productivity email-client, email-management
8likes

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Geary
Open Source by Yorba Foundation |
- Linux
Not an alternative?
Geary is a lightweight email reader designed to let you read your email quickly and effortlessly. Its interface is based on conversations, so you can easily read an entire discussion without having to click...

Office & Productivity gnome, email-client

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