- Fix a HTML pasting issue in new message compose on Windows
- Fix an issue with a scroll bar appearing in the accounts pane of the main Postbox interface window
- Ability to specify a font point size for outgoing HTML messages and many HTML editor fixes to better preserve fonts and font sizes during editing
- Address Book Groups and mailing lists are now auto expanded in the compose window. This behavior can be configured.
- Postbox now honors the distribution list setting for choosing the correct e-mail address for a contact on Mac OS X when sending to a mailing list
- Better support for opening attachments on Mac OS X
- Fixed an issue with deleting a message and having it re-appear in the Inbox
- Changes to enable the latest Send Later Add-on to work in Postbox
- Changes to enable the BETA version of Microsoft Exchange Provider for Lightning Calendar to work in Postbox
- Enable Quick Move support from the stand alone message window
- Fixed an issue with the wrong identity being chosen on reply when using a Global Inbox with POP3
- Fixed an issue with messages getting stuck in the Unsent folder
- Fixed an issue when using Postbox with a large number of accounts where you could no longer send messages without restarting
- Performance improvements for summarize mode in compose
- Performance and Stability Improvements