If you need to import a number of e-mail addresses into a mailing list, adding them one at a time can take a long time. To automate this task you can use Parallels Plesk Panel creation utilities. To add several e-mail addresses to the mailing list, run the following command:
# /usr/local/psa/bin/maillist.sh --update <mailing list> -members add:<email 1>[,<email 2>,...,<email N>]