Drafts folder

When you choose File -> Save Draft from the Compose a message window, the draft message is saved. Use this preference to specify the folder in which to store your draft messages.

Click on the folder button to open the Select Folder dialog. Select the folder in which to store your draft messages from the Select Folder dialog, then click OK.

Sent messages folder

When you send a message, a copy of the message is saved automatically. Use this preference to specify the folder in which to store your sent messages.  

Click on the folder button to open the Select Folder dialog. Select the folder in which to store your sent messages from the Select Folder dialog, then click OK.

Restore Defaults

Click on this button to restore the Email and Calendar default settings for the Drafts folder and Sent messages folder preferences.

Always carbon-copy (Cc) to

Select this option if you want to copy all of your messages to an address. Enter the address to which you want to copy your messages in the field. If you want to copy your messages to more than one address, separate the addresses with a comma. 

Always blind carbon-copy (Bcc) to

Select this option if you want to blind-copy all of your messages to an address. Enter the address to which you want to blind-copy your messages in the field. If you want to blind-copy your messages to more than one address, separate the addresses with a comma.