bulk emailing

I am not sure which area to post this question... This area seemed to be the best fit...

I need to develop a solution for a company so they can send out 200,000 emails per month or bi monthly. This isn't spam. All of the email addresses are opt in. I looked at services of Lyris and other services but they are very expense. I am thinking that installing an SMTP server at their office will do the trick. They have a T1 line at the office. Does anyone have any experience with this and sending out this many emails.

Thanks for the help.

Yes, having their own mail server would greatly help in this process.

Where I used to work last year we used outlook to publi-post via email
it send 1 separate mail to each recipient and you can personalize the mail with info(name mail etc)

the downside is that the process is very slow (1 mail evry 0.5 seconds max [more if the mail have a large size]) and the company ISP (mail provider) sometime used to block mail sending when too many mail have been sent in less than x minutes ...

otherwise outlook/word is an easy to use tool

Thanks for the help GazouTG and Memnoch.