Three-pane hack for Panther Mail
Sunday, November 5th, 2006
The poster at Apathy Online has developed a quick hack
for Panther Mail users that will give them the “Outlook-like” three-pane layout.
Tiger Mail users can use Aaron Harnly’s excellent Letterbox plugin
. However, despite a few positive reports, Aaron doesn’t promise seamless operation
in Panther Mail.
If Letterbox fails you in Panther, this could be the fall-back you are looking for.
The end result looks like this:

Image from ApathyOnline
Installing it is easier than you might think.
First, quit Mail. Then navigate to it in your Applications folder and right-click on Mail’s icon. Select the “Show Package Contents” option:

Then navigate through the Contents and Resources folders to the English.lproj folder. (Or the lproj folder for the language you use.)
Open it. Find the MessageViewer.nib file:

Back-up the original file before you do anything, either making a duplicate in the same place or copying it to the Desktop.
Then right-click on the MessageViewer.nib icon, choose the “Show Package Contents” option again and replace the files inside with the three modified files from ApathyOnline.
Restart Mail.app and enjoy.
Disclaimer: I have not tested this myself, no longer having a Mac with Panther installed. Also, since I can’t remember that far back, I have simply assumed the layout of the Mail package is the same. If it isn’t, I hope that someone will tell me.
Tags: Apple Mail, hacks, mail.app, outlook, panther, three-pane, Tiger, widescreen

Not everyone likes the new lozenge buttons in Tiger Mail. John Siracusa at Ars Technica 


PocketLight is an OS 10.3 search app for Mail.app, iCal, Address Book and files in specified folders that was developed before Tiger was released. Spotlight overtakes it, but users still on Panther can enjoy its Spotlight-like abilities.

