Postbox 7.0.27

Postbox

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:

All Your Accounts in One Place -- Postbox Account Groups let's you organize accounts into groups.
Conversations Views — just like Gmail.
Postbox Topics — this takes tagging to a whole new level.
Great Gmail Support — labels, important, send, archive, shortcuts and the calendar!
Cloud File Sharing add-on enables you to send links to your Dropbox, Box, and OneDrive files instead of sending the files themselves.
Responses are pre-canned text/HTML snippets that can be reused within message replies.
Social Media Integration — update your Facebook, Twitter or LinkedIn status as well as auto-import profile photos for prettier email.
RSS and Newsgroup Support
Identities (also known as Aliases)
Date, address, phone number, and package tracking number detection
Full Suite of Keyboard Shortcuts
Anti-Tracking -- To protect your privacy, Postbox 5 has a new Anti-Tracking feature that will alert you when tracking tools are used within a message.
Includes 70 professionally written email responses that anyone can customize and use.
Postbox now includes 25 Beautifully Designed Email Signaturesthat will present you in the best light possible.
Access and manage POP and IMAP email accounts
Dark Mode on Windows and macOS
...and much, much more.

Postbox 7.0.27 changelog:

Improved the UI feedback for message drag and drop
Changed the behavior of Google Safe Browsing so that the local database of URLs is deleted once the feature is disabled
Fixed an issue that could prevent nested folders from appearing in the Subscribe panel
Fixed an issue with the profile migrator when external storage locations were used for POP and Local accounts
Fixed a crash on macOS Big Sur when Fullscreen Mode is used
Fixed an issue with window titles on macOS Big Sur
Fixed an issue where the Favorites Bar wouldn't update properly after deleting a folder