How do yo underline text on msn?

You can't directly underline text on MSN. MSN Messenger is an outdated messaging service, and it doesn't have the functionality to format text beyond basic bold and italics.

If you're using a modern messaging platform like Microsoft Teams, you can use the following steps to underline text:

1. Select the text: Highlight the text you want to underline.

2. Use the underline button: Look for the underline button in the toolbar or menu. It typically looks like a wavy line. Click it to underline the selected text.

For other messaging platforms, the process may vary slightly.

If you're looking for a way to format text in a more advanced way, you might consider using a different platform that allows for more formatting options.