You can add email addresses to your subscriber list by importing them.
The import settings section:

At the import settings section you set the main import settings:
Several options are available for importing email addresses into the subscriber base:
| Option | Description |
|---|---|
| Choose import format | Import format of the email addresses:
|
| Newsletter | Email addresses are added to the newsletter subscribers |
| Product Updates | Email addresses are added to the product updates subscribers |
The email addresses textarea:

You can paste the email addresses you want to import, at this section.
Click on the “Save Changes” button to import the email addresses into your subscriber base. They will be imported according to your import settings.
After you importing email addresses into the subscriber base you will get a statistic, that shows you, if importing the email addresses was successful or not.

The statistic shows how many email addresses were added to the database and how many existing subscribers were changed.
You can then either add more email addresses to the subscribers base or check your subscribers list.
Click on the “Subscriber List Management” button to open the email subscriber list management page.