Outlook不提供使用不同于用户名登录的地址进行发送.

Outlook doesn't provide to send using different from address other than your username to log in.

两个电子邮件地址都需要相同.

You need both email address same.

您可以在管理面板中添加一个或多个发件人，之后可以轻松地从其他地址进行发送.

You can add one or more sender in your admin panel after that you can send easily from different addresses.