What applications can I use to send out announcements and e-newsletters?

From Michael Miller – Mailchimp was used successfully for an email campaign for the “Relationship at UCLA Website” 
 http://www.mailchimp.com/index.phtml 
 It’s actually a very slick Web app but it isn’t free – however, it’s well worth the money if your budget allows it – and was really easy to use. 
 I recall it being like $29.00 for 2500 addresses, however there is a monthly plan available. 
 It has stats tracking as well as reporting features. 
 
 TFT uses a proprietary list c/o the Alumni Association. We also were close to using Campaign Monitor. 
 The Archive uses Constant Contact for newsletters and e-calendars. We use lists list this for internal staff communication.