HOME PAGE CUSTOMIZATION
1. Click File > Preferences > User Preferences.
3. Under Sending, click one of the options in the Save copies of messages that I send field.
Tip: You can also save a message in a folder when you send it. Instead of clicking Send, click Send and File when you send it. When prompted to select a folder, specify the one in which to save the message and then click Add. To create a new folder for the message, click Create New Folder. A copy of the message is placed in the folder you specify.
Related topics Preferences for sending and receiving mail