In Mail OS X 10.6 one of the changes is how an email address is copied to the clip board. By default in 10.6 when you copy and paste an e-mail address you get the output in “Name ” . Before the release of 10.6 you could just copy an email address in Mail and when you pasted it you would just get “name@example.com.”
If use use Mail.app like I do and use the copy feature to move e-mail addresses around, and are frustrated by this new format then I have a fix for you.
The developers of 10.6 build in a terminal fix to get the paste back to the way it was before. The fix is a real simple one. All you need to do is open the Terminal and paste the code from below. ** Make sure you close Mail.app before you do this.
defaults write com.apple.mail AddressesIncludeNameOnPasteboard -bool NO
Restart Mail, and Copy Address will once again do just what it says, which is the preferred behavior for my use of Mail. If you try this and decided you prefer the default version, quit Mail and run this command in Terminal:
defaults delete com.apple.mail AddressesIncludeNameOnPasteboard
Open Mail.app again and you should have the paste function of 10.5 back. If for some reason you want to undo this then you can use the code below to undo the hack.



February 25, 2010
Thanks so much for this tip! I use this a lot and was really frustrated when they changed it…
March 7, 2010
sorry – what is the terminal and where do I paste the link? thanks
November 11, 2010
Cool! This was really starting to bug me yesterday. I’m glad I stumbled onto this post!
May 24, 2011
What is the Terminal and how do I get to that? this is driving me crazy and I want to fix it… I can’t believe they changed this…
October 12, 2011
Thank you!