sending mass mail

I have 1000's of email addresses from over 50 yahoo groups.  I can download all the emails in a column:

I.E.

mysite@mysite.com

smith@hissite.com

jane@hersite.com

ETC, ETC.

It has no commas or even semi-colons.  Just as it looks above.  That's how I would paste it unless I have to add a symbol at the end of every addy.

I'd like to send an invite to join the social network.  Without having to use any of my yahoo, hotmail accounts etc as I don't think it will allow it.

Do any of you know if this is possible?

Thanks.

I use outlook with my admin account to do mailshots of this size. I have also used hotmail for it in the past. It can be done without problems.

You could insert them into the sys_sbs_users table in the database. That's the table people are inserted into when they "subscribe" from the homepage. Then use the dolphin mass mailer to send the invitation out. Just check "send to subscribers" in the mass mailer when you send it.

 The whole point is not to use the hotmail account unless I open a new one, but I'd rather use my hosting email.

 I'll try this out, I'm a novice so don't know much on how to access the sys_sbs_users in the DB.  My DB is created via my FTP file manager through my hosting account.