For very large e-mail sendning quantitys you should use a email class like php mailer. http://phpmailer.codeworxtech.com/

Because as i understand the mail() function opens a connection and closes it on every call. That might be of server load concern later on.

But i guess a few hundred emails is going the be allright but one would have to see. Optionally you could work in a cue system of some sort to keep the load down, maybe a delay between loops or something. Otherwise a email class would be good.



/EyeDentify

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Of course the whole point of a doomsday machine, would have been lost if you keep it a secret.