Use the following procedure to add words to the dictionary Custom.dic, which is shared by all Microsoft Office programs.

1. From the main Microsoft Outlook window, on the Tools menu, click Options, and then click the Spelling tab.
2. Click Edit.
3. Type the words in the list. Press ENTER after each word.
4. On the File menu in Notepad, click Save.

Note  If Microsoft Word is your e-mail editor, you can create more custom dictionaries and add words to whichever one you want. For more information, see Word Help.