See http://mailplaneapp.com/info/mailplane2.html

New Italian translation.
The Catalan, French, German, Norwegian, and Romanian translations have received an update, too.

Bug fixes:
* Drag and drop to dock didn't work in all cases, especially MAC OS X Tiger users did experience the problem.
* Mail->Go to menu items were disabled

NB: 1.61 is the latest stable version.

• "Oops 007" error messages when viewing Netflix HTML messages
• Some help pages didn't work under Leopard (error message: Internet Connection Required)
• Brazilian Portuguese users get the English localization
• Offline indicator doesn't go away on main window.

- Forces gmail to use older version, so that it works with Mailplane
- etc

Important: Please update before October, 31st as Mailplane 1.52 will expire

Release notes:

Leopard ready iPhoto Plugin

The old iPhoto plugin was based on the SIMBL InputManager. As InputManagers are not supported in Mac OS X Leopard, a new iPhoto plugin is provided.
When the plugin is installed, you can choose Mailplane as your email application in iPhoto/General preferences. The icon in the lower part of iPhoto is then changed to Mailplane, too.

However, the Option key to compose in Mail.app instead of Mailplane isn't supported anymore. Please change your preferred email application in iPhoto preferences.

Installation: The update will remove the old InputManager-plugin and then automatically install the new plugin. If you don't have rights to add the plugin to iPhoto, you'll be asked for your administration password. Just cancel the dialog box, if you like to install the plugin later. Make sure you restart iPhoto after the update. To install or remove the plugin manually, please go to preferences and then select Photos.
Brazilian Portuguese and Korean Translations
Mailplane features two new languages:
Korean by Calvin Jeong
Brazilian Portuguese by Leonardo Otsuka

This is excellent news - thanks Calvin and Leonardo!
Use the "Help->Support and Feedback" window to send translation related feedback.
Drag and drop text and URLs
You can now drag and drop text or URLs to your message text.
Open external Links in Firefox
For Safari, OmniWeb, Camino users: If you like to open an external Link in Firefox instead of your preferred browser you can now press Shift while clicking the link.
This is an existing feature, but I like to mention that you can use the Option key to open an external link in background. This way Mailplane stays active, and your link is opened for later reading.
Leopard and download destination folder
The first time you start Mailplane under Leopard, it will check the download destination folder. If it still points to your Desktop, it will be changed to "Downloads".
Tweak UI/Gmail text size

Tweak UI: It is now easier to set the Gmail text size to 100%.
This is a reported WebKit bug: When you use a setting other than 100%, the text may be increased/decreased when deleting lines or pasting text.
Known Leopard problem: Screenshots

Screenshots do not work under Leopard. However, this may be fixed in the 10/26 release.
New Advanced preference to watch "cutting-edge" releases

If you like to test and try the very latest features before they are released to all users, then this setting is for you.
Warning:
Mailplane may be less stable
English only, "cutting-edge" updates are not translated
Help may not be updated
Released more often than stable releases

If you still like to be part of it, go to Advanced preferences and turn on the setting. You can always go back to the latest stable release by downloading it here:
Bug Fixes
• New Mail notifications stop working
Mailplane waits after after authentication dialog (moving the mouse gets it going again)
Password was not cleared in authentication dialog box after an account sign out
Screenshot toolbar item does not work on separate window
Drag and Drop of logo in main window leads to composition of new message
Korean/Japanese only: Delete key stops working

MAC OS X 10.5 LEOPARD SUPPORT
Mailplane is ready for the upcoming Mac OS X release. The same Mailplane version now runs on both 10.4 and 10.5 releases of the operating system. I am still working on the iPhoto plugin, the screenshot function, and some minor (e.g. toolbar repaint) stuff. But, other than that all features work just fine.

FINNISH AND CATALAN TRANSLATIONS
Mailplane features two new languages: Finnish by Mikko Aarnio and Catalan by Albert Simo. Kudos to Mikko and Albert for their great work!
Use the "Help->Support and Feedback" window to send translation related feedback.

"DON'T OPTIMIZE" PHOTO DRAG AND DROP
Sometimes you need to send a picture without any optimization, and want keep size, file type, and picture quality. Just press the Command key while dropping the file. The mouse cursor will change to "Link" instead of "Copy" to indicate that no optimization will be performed.

LAUNCH HIDDEN MAILPLANE AT STARTUP
Do you like to launch Mailplane whenever you start your Mac or log into your account? Add Mailplane to your system preference account login items. If you check the "Hidden" option, Mailplane won't open any window when it starts.

CHANGES
- Download units changed from "k"/"m" to "KB"/"MB"
- Separate window progress indicator shows more accurate progress
- Removed Message Sent/Discarded alert when using Mailplane without Growl

BUG FIXES
- Initial main window position not in upper left corner
- Folder path layout problem
- No Growl: Annoying "Download started" message box
- Crash when closing an initializing compose window
- Double clicks instead of Single clicks in Talk window
- Folder path layout problem
- authentication of gmail email address with mixed case (e.g. MyName@Gmail.Com) interpreted as Google Apps domain. In case of Google Apps accounts, the inbox didn't load
- Some users experienced an offline indicator after successful authentication.

• NEW: Languages - Spanish, Portuguese, Swedish, Icelandic, Dutch, Japanese
• NEW: Edit Format and Font menu items. Enables you to use shortcuts to make text bold (Cmd-B), italic (Cmd-I), underlined (Cmd-U), centered (Cmd=|) etc.
• NEW: Insert Email Address panel (Cmd-Option-A). Either composes a new message, or inserts one or more email address into the to, cc, bcc, or body fields.
• NEW: iMedia Browser (see Window menu or Cmd-4)
• NEW: Account preferences and authentication window have now a "Create new Gmail account" button.
• NEW: "Mail->Insert" submenu to insert (file, screenshot, text snippets, and email addresses)
• NEW: New "Create Message and attach File..." menu item in dock menu and notifier menu.
• NEW: Translator feedback button on "Support and Feedback" window
• NEW: Download window has a "clean all" button to remove all inactive downloads
• CHANGED: Insert text snippet has a new shortcut (Cmd-Option-I)
• CHANGED: Toolbar "fixed Space" in customize panel
• CHANGED: "Google Find" menu item has a new Shortcut: Cmd-Shift-F
• CHANGED: Less icon bounce at startup
• CHANGED: Moved the "Open Main window" menu item up
• CHANGED: Pictures can now be dropped on the message text to attach them to the current message. Tip: to app icon to create a new message
• CHANGED: The last active preference window tab is remembered in user defaults
• FIXED: Focus problem after clicking "Reply" (characters get executed instead of entered)
• FIXED: After long inactivity freeze on click or refresh
• FIXED: Links stopped working after sending a message with a faulty email address
• FIXED: Window resize when opening drawer didn't work with multiple screens
• FIXED: Preference window position did change when switching folders
• FIXED: Removed obsolete characters from Google Talk notification.
• FIXED: "Ghost" Talk window
• FIXED: Preference window position after restart
• FIXED: Crash when closing an initializing separate compose window

• NEW: Romanian translation by Ovi Pășcui (mailto:ovi@primacom.net)
• NEW: Online news (e.g. known bugs) displayed on feedback window
• NEW: Getting started guide button on welcome window
• NEW: Getting started, Online resources in Help menu
• NEW: Online/Offline indicator can be disabled in Advanced preferences
• FIXED: mailto and "Send Link" from browser did wrong decoding
• FIXED: When replying some keystrokes got executed instead of entered into the text field
• FIXED: Spell Catcher didn't work. Update to the latest WebKit did solve the problem.
• FIXED: Force Quit now shows "Mailplane" instead of "Mailplane_" - this should solve the double notifier icons problem.
• FIXED: Crash when closing separate window immediately after opening
• FIXED: "Show original" didn't work with latest WebKit
• CHANGED: "Send Feedback..." menu item renamed to "Feedback and Support..."
• CHANGED: Separate window now remembers size and position and still cascades correctly if you open more than one
• CHANGED: Optimize Photos does preserve the PNG file type. All other types are converted to JPG.
• CHANGED: re-new authentication when switching to another account

• NEW: Custom sound for unread message notification
• NEW: Connection security icon tooltip
• NEW: "Open Main Window..." menu item in status item menu
• CHANGED: Growl/Sound are not shown/played when opening Mailplane or switching to another account
• CHANGED: Do not notify (growl/sound) older entries
• CHANGED: Removed reflections from status item icon
• CHANGED: "Open Message...", "Open Message with Screenshot...", and "Configure Accounts..." active Mailplane before opening the window
• FIXED: In some cases wrong authors were displayed in the status item menu and growl notification messages
• FIXED: Unread message counter displayed in status item, drawer, and application icon didn't match the inbox counter
• FIXED: "Sign out" link didn't terminate Mailplane if only one account was defined
• FIXED: Changing the avatar in Talk window didn't work
• FIXED: Special characters in Growl and status item menu didn't work
• FIXED: Status item menu missed entries in some cases
• FIXED: Custom stylesheet didn't work with spaces in file or folder names.
• FIXED: Downloads with already existing names are not overwritten. The new download gets renamed.
• FIXED: Some typos