Disable Mail Animations in Mac OS X Lion
If you use Mail you have probably seen the new Mail animations for replying and sending, where the message seems to slide off the screen. Like all the other new animations, this is a polarizing addition and some people hate it. Turning off the general new window animations in Lion doesn’t change Mails animations though, because they are separately controlled by another defaults write command.
Here’s how to disable both send and reply animations:
defaults write com.apple.Mail DisableReplyAnimations -bool YES
defaults write com.apple.Mail DisableSendAnimations -bool YES
As usual this is very easy to reverse if you want the Mail reply-to animations back
defaults write com.apple.Mail DisableReplyAnimations -bool NO
defaults write com.apple.Mail DisableSendAnimations -bool NO
I like the animation, but like the rest of the eye candy it can be distracting and even make OS X feel slower than it needs to be.
Related, if you don’t like the new interface of Lion Mail.app, you can also easily change back to the classic layout which shows the new mail on top of messages.
Update: Updated to disable both animations, thanks to Joe Ferrante for tip via comments!