To specify how the Enter key works when composing messages

By default, pressing the Enter key sends the message you are composing. You can change this so that the Enter key inserts a new line into your message.

  1. Click Tools, click Options, then click the Message tab.

  2. Select Enter Key Inserts New Line When Composing Messages.

  3. Click OK.

Ctrl+Enter and Shift+Enter always insert a new line and Alt+Enter always sends a message.