Mass mail algo

Anybody knows an efficient algo for mass mailing 3000+ members (and growing) with : 1. email address being pulled from MySQL? 2. does not timeout (what else is new :D) Here's how i figure my options: 1. Extract email_addr from MySQL then sent them one at a time (most likely will timeout...) 2. Extract all email_addr from MySQL, store into one huge array (what about memory overhead?) then : a. sent them one at a time (will also likely to timeout...) b. collect and send every "x" email address (most possibly will show at their "TO: email field" - not wanted) R. Kurniawan Web Developer PT. Praisindo Dotkom Rileks Division http://www.rileks.com/