Eventually, having changed Snow Leopard Mail’s icon to something you like, you might want to change it back to the default image—perhaps you’re tired of the new one, perhaps you need a vanilla Desktop for freelance work, or whatever.
It’s not too hard.
Find mail.app in the Applications folder, highlight it and open up its Inspector pane (⌘-I).
Then follow the first two steps in the first post to unlock and change the permissions. Then all you need to do is highlight the image in the top lefthand corner, and press the Delete key. The image reverts to the previous one.
Remember again to change the permissions back at the end.
Now it’s as if you never made the change:
[John in the comments points out how an earlier version of this post used a sledgehammer to crack a walnut. Thanks!]
A Japanese graphic artist has created 40 mail stamp icons, featuring various cute animals. 
.
During my five months off, some nice new alternative mail stamp icons have appeared. 
Dane Harnett has released a widescreen plugin for Leopard Mail, which gives Mail.app an “Entourage” or “Outlook” look.
Hawk Wings reader René Boekhorst sent me a nice collection of mail stamp style icons featuring the characters from the Peanuts.
Thomas McMahon has knocked out some styles for the “Stylish” CSS-extension that produce brighter, better looking labels in Thunderbird. 
It’s almost eighteen months since I first posted about the noticeable 
