How to Backup Restore Apple Mail

Quit Mail if the application is running.
Open the Finder and click your username under 'Places' on the left of the Finder window. Open the 'Library' folder. Then open the 'Preferences' folder.
Locate the 'com.apple.mail.plist' file. Click it once to highlight it. Then press 'command' and 'C' on your keyboard to make a copy of it.
'Desktop' under 'Places' on the left of the window. Click the 'File' menu and select 'New folder.' Name the folder so you can later identify it as your Mail backup folder.
Place your cursor on an empty place on the desktop. Click the desktop with your mouse while holding down the 'control' key. Select 'New folder.' Name the folder so you can later identify it as your Mail backup folder.
Double click the new folder to open it. Press 'command' and 'V' on your keyboard to paste a copy of the file in the folder.
Copy the 'Mail' folder located in the 'Library' folder. Paste it into your new backup folder.
Copy your backup folder to an external hard drive, USB flash drive, or burn it to a CD, if you want to protect the files from hard drive failures.
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How to Recover a Bookmark on a MacBook

Open a new Finder window. Click on the symbol that resembles a miniature house. This often has the user's name beside it.
Scroll down to 'Library.' Within the Library file there will be a file labeled 'Safari.' Click on 'Safari' and scroll down to 'Bookmarks.plist.' Hold down the 'Option' key and drag the file to the desktop. This won't delete the file; it will only copy it to the new location.
Open the Safari application and click 'File.' Scroll down to 'Import Bookmarks.' Click this and follow the prompts to select 'Bookmarks.plist' from the desktop to import. If this step does not work, continue to Step 4.
Open Time Machine. This software makes backups of files on Mac OS X. The Time Machine software must have been activated prior to losing the initial bookmarks or it won't help. Follow the prompts to move back to the time period before the bookmarks disappeared and prompt the software to restore the application to that time.
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