> I have a list of people who have registered for Newsletters...let's say
> 200-500 people. I would like to send them all an email to remind them. If
> I were to use the mail() function, how would I do it without choking the
> server? Can I build a long header string with 200-500 Bcc's? Or call the
> mail() function 200-500 times in a loop?


I have one question --  why do you keep asking the same question on the same
list?

You apparently haven't been listening to the answers you've already gotten.

  http://p2p.wrox.com/archive/pro_php/2002-04/17.asp
  http://p2p.wrox.com/archive/pro_php/2002-06/18.asp