Mailto members..?

Hi guys! Anyone knows of something like this, but for free? http://www.webscriptsdirectory.com/PHP/E-Mail-Systems/Php-Newsletter-Script-L1237/ All I want to do is to send "a html mail" to all my members at http://www.stammis.com/ (swedish site for pedigrees). It would be a informative letter that tells them about latest news at Stammis Internet. I could something like this... while ($dbArray = mysql_fetch_array($querys)) { ...sendmail (from, to, htmltext...)... } but this will bring a timeout. Any suggestions? (I don't want to change the timeout - value, it doesn't seem correct) /G ps. OT: Planning of making this site Open Source, do you think it matters if the site is in swedish for the sake of Open Source? (the code is in english).