Each Net-C account is identified by a main e-mail address.
You can add aliases, which are alternate e-mail addresses:
警告! You can only use your main e-mail address to connect to your Net-C account on the webmail, with a mail client, or with an app.
If you want to change your main e-mail address, you can choose a new one among your aliases.
You may for instance use aliases in the following cases: