So far, it’s the first email client I’ve used in a long time that might make me switch from gmail’s web interface. It’s based on the Thunderbird code base, but adds a lot of useful features. Most importantly, it has a “show all” button at the top of every email which will bring up a conversation view.

Not only that, but it has a lot of neat features for searching and organizing. One of my favorite is the ability to show all attachments from an account, and then search those attachments by content, sender, date, etc.. I receive a lot of pdf’s in email which are difficult to find in Outlook. Postbox significantly cuts down the amount of searching I have to do to find those documents. For example, I know Vimal sent me a pdf in the last couple of months, I hit the attachments button, then in the search field I enter “from:vimal after:February”. Fantastic.

Unfortunately, even though it’s based on Thunderbird, it’s not available for Linux and a quick Google search didn’t reveal that a Linux version is planned.