Headers and mail() function

[scoppc]

Since the first time I started to send email using this mail() function, I always wonder what exactly the headers that I need to include so that the email that I sent is valid (either HTML or Plain Text)?
What I always do is just one line of code like the one shown below:

mail($to,$subject,$message,"FROM: [e-mail]");

Can anybody help me out of this confusion? Probably, there are some good resources out there that I can read bout this?

---

Just out of curiosity, do you think doing this:

mail("[e-mail],[e-mail],[e-mail]",$subject,$message,"FROM: Webmaster");

will be more efficient as compared to this:

mail("[e-mail]",$subject,$message,"FROM: Webmaster");
mail("[e-mail]",$subject,$message,"FROM: Webmaster");
mail("[e-mail]",$subject,$message,"FROM: Webmaster");

Thanks.

regards,

scoppc

[khaine]

If you want a simple solution have a look at

http://www.phpbuilder.com/snippet/detail.php?type=snippet&id=614

it takes care of all the headers for you.

as for the other question it may be more efficient but it can show all the email addresses in the to line. If you are mailing to people who shouldent know about each other. i.e. a mailing list, it is probably best to use the second method.