Obtain a digital ID and add it to your mail account

To obtain a digital ID and add it to your e-mail account

To send digitally signed messages, you must first obtain a digital ID. Outlook Express automatically adds your digital ID to your e-mail account when you send your first digitally signed message.

Obtain a digital ID from a certification authority.
Go to Microsoft Outlook Express Digital ID Web site for links that will take you to a certification authority.
In a new message window, on the Tools menu, click Digitally Sign.
Compose and send your message.

When you send the message, Outlook Express searches your computer for a valid digital ID with the same e-mail address and then adds the ID to your e-mail account. If more than one valid digital ID is found, you must choose which ID to add to your e-mail account.

Notes

To use a digital ID, the e-mail address of your digital ID must match the address of your e-mail account. If you have multiple e-mail accounts, you will need a separate digital ID for each account you want to send secure e-mail from.
If you have set up a different reply address (on the General tab of your account properties dialog box), message recipients won't be able to use your ID to reply with encrypted e-mail. When sending secure e-mail, your reply address must be the same as the account you send digitally signed e-mail from.