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Download Editors' Rating:
Average User Rating:
out of 20 votes

Quick Specs

  • Version:
  • Total Downloads:
  • Date Added:
    Jun. 02, 2015
  • Price:
    Free to try (30-day trial); $9.95 to buy
  • File Size:
  • Downloads Last Week:
  • Platform:

Editors' Review


Using Mozilla's own code, Postbox rivals Thunderbird for alternative desktop e-mail clients. Or at least, it wants to. Make no mistake, Postbox introduces some innovations that Mozilla could learn from. Much as Songbird changes Firefox's tune for audiophiles, Postbox takes desktop e-mail hard toward Web 2.0, with fast links to upload contacts to Facebook and pictures to Picasa.

Click on an e-mail, and the preview pane not only shows the text, but extracts all links, images, other attachments, and contacts into a Compose Sidebar for easy management. From there, you can upload to Twitter, FriendFeed, MySpace, Delicious, and Google. Postbox is also obsessed with tabs, so that each new mail can open traditionally or in a tab of its own. Searches get their own tabs, too. Postbox will ask you to import e-mail, contacts, and other messaging data from Thunderbird, Outlook, Google, and Yahoo when it starts. Two other innovations are worth highlighting: you can globally extract attachments, links, images, or contacts into a single tab, and there's a remix of Thunderbird's Labels feature. Called Topics, it automatically searches across folders for messages with the same tag. This can't be done without extra effort in Thunderbird.

Postbox gained Thunderbird's extensibility in beta 13, but it's currently limited. There's heavy customization is limited, although Postbox does now have it's own slightly-buggy version of Thunderbird's Lightning calendar plug-in. There's also support for the Provider for Google Calendar plug-in. All the add-on talk may be a major interest for some, or much ado about nothing, but the beta won't be free for much longer: Postbox plans to go premium in the fall of 2009.

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Publisher's Description

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User Reviews

Results 1–1 of 1

2 stars

"Slow and lacks necessary features"

June 25, 2015  |  By kagy

 |  Version: Postbox 4.0.2


More like neutrals - Postbox seems no better than any other mail program. It's downloads and uploads your mail.


It is frustratingly slow at retrieving mail. And it is not intuitive at all, especially when attaching photos, which cannot be resized within the app, meaning that if you're trying to send a couple of very large jpeg files, chances are good that your client will refuse it because of the size.


Stick with Apple Mail.

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Full Specifications

What's new in version 4.0.2
  • Disables older language pack add-ons that were causing XML errors on launch
  • Fixed an issue with accessing iPhoto menus
  • Fixed errors that could occur when deleting an account
  • Error console now available via keyboard shortcut command/control-shift-j
  • Added time/date stamp to error console
Publisher Postbox
Publisher web site
Release Date June 02, 2015
Date Added June 02, 2015
Version 4.0.2
Category Communications
Subcategory E-mail Utilities
Operating Systems
Operating Systems Windows XP/Vista/7
Additional Requirements None
Download Information
File Size 16.62MB
File Name postbox-4.0.2-win32.exe
Total Downloads 8,906
Downloads Last Week 14
License Model Free to try
Limitations 30-day trial
Price $9.95

Previous Versions:

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