Postbox is a slick, modern-looking email client that provides a rich set of tools to help you get more from your messages. Postbox helps you make the most of your email, offering powerful new ways to find, use, and view email messages and content, organize your work life, and get stuff done.

Postbox features include:

Postbox 6.1.6 changelog:

OmniFocus 3 compatibility ​

Scrollbar clean up for Dark Mode on macOS

Change to allow searches from contact cards to clear entries in the search bar

Fix to address character encoding regression

Fix for addressing for contacts that contained commas in display names

Fix for an issue that prevented more than one address to be moved across addressing fields

Fix to address contextual menu selection when adding shadows to subsequent images

Download: Postbox 6.1.6 | 44.7 MB (Shareware)
Links: Postbox Home Page | Postbox for macOS | Screenshot