Turn off automatic name checking and completion
- In Microsoft Outlook, on the Tools menu, click Options.
- Click E-mail Options.
- Click Advanced E-mail Options.
- Do one or more of the following:
Turn off automatic name checking
- Under When sending a message, clear the Automatic name checking check box.
Turn off automatic completion of e-mail names
- Under When sending a message, clear the Suggest names while completing To, Cc, and Bcc fields check box.