Here's a standard view on Mail.app (OS X 10.5).
If the selected message on your message listing (showing header info, number 1 in the image) does not show up in the actual message box below (number 2), but instead Mail.app shows an another message, your index may have gone bad.
Worry not. To fix the problem, close [...]
Enter multiple addresses in the Email Address field of your Mail.app Account Information dialog, separated by comma. Works flawlessly. This has been bothering me for years. I didn't know how to do this until Justin showed how!
In Terminal, write
defaults write com.apple.mail UserHeaders '{"Bcc" = "another@address.here"; }'
You can write other headers as well:
defaults write com.apple.mail UserHeaders '{"Reply-To" = "theemail@goes.here"; "Bcc" = "another@address.here"; }'
To get defaults back:
defaults delete com.apple.mail UserHeaders
This, as many other useful hints, came from macosxhints.
In order to create a subfolder (and a folder that holds those subfolders), use slash (/) character in the folder name.
Entering "Thesis/Virtuous Leadership" as the name of the new folder creates
folder "Thesis" at root of the account, and
folder "Virtuous Leadership" within the "Thesis" folder.
Following subfolders can be created normally by right-clicking on the "Thesis" folder [...]