You've created an automated hello mailing in your account that you intend to send to new contacts being imported.
1. Navigate to the Contacts dashboard.
2. Choose "Import Contacts" on the left.
3. Click "Choose File" to browse to your desktop > Find your .CSV file > click "OK".
4. Click "Next' button.
5. Map your CSV file columns listed on the left to the database demographics on the right.
6. Click 'Next'.
7. Select 'Import Action' as 'Import as regular contacts, and send hello' (This action sends the new contacts a hello message.)
8. Create category if needed, or add to an existing category.
9. Click "Import".