[clug] Mass Mailing

[Dr Mikel]

Hello all,

I'm trying to find a simple mass mailing solution (it's not spam).
The recipients come from a database that can be in text or excel format. 
50,000+ that needs to go out every weekend.
And another 1000+ with attachment every weekend.

All it needs to do is send mail from the excel/text file and I would input 
the message etc preferably web based.
It would be nice if it could handle or split the loads some how maybe 
scheduling?

If anyone has any ideas that would neat.

cheers

//michael :)