For a campaign site, I will be using a CMS that inclues a mass mailer function and a component that lets users send emails to campaign targets through the web site.
The user base is around 20,000 currently. While newsletters/announcements to this segment will happen probably once or twice a month (or weekly, at the most), the campaign emails may be around 500 to 1000 per day.
I am looking around for hosts that will allow this as most are hypersensitive (rightly so, no doubt) about bulk mailing.
I can't afford a dedicated server (the lowest seems to be around $150 per month), so I am a bit stumped about the options I have.