[Mailman-Users] mass subscribe using script or cut/paste?

I have 3,000 emails I need to get into a new Mailman mailing list.
Do you think I can cut and paste into the admin membership- management interface? I have no clue what it can handle. I searched the archives but did not find anything similar to my question.

The box I am using is remote and I only have ssh access to it along with the web management page of course. I suppose I could use wget, ftp, or maybe scp to get the file to the remote box to use the add_members script. At this time I am not too comfortable and confident doing something like that file transfer.

Has anyone pasted that many into the admin membership-management page? How did it work?

Thanks, Andy