(From http://www.w3schools.com/PHP/func_mail_mail.asp )
|to||Required. Specifies the receiver / receivers of the email|
|subject||Required. Specifies the subject of the email. Note: This parameter cannot contain any newline characters|
|message||Required. Defines the message to be sent. Each line should be separated with a LF (\n). Lines should not exceed 70 characters.
Windows note: If a full stop is found on the beginning of a line in the message, it might be removed. To solve this problem, replace the full stop with a double dot:
|headers||Optional. Specifies additional headers, like From, Cc, and Bcc. The additional headers should be separated with a CRLF (\r\n).
Note: When sending an email, it must contain a From header. This can be set with this parameter or in the php.ini file.
|parameters||Optional. Specifies an additional parameter to the sendmail program (the one defined in the sendmail_path configuration setting). (i.e. this can be used to set the envelope sender address when using sendmail with the -f sendmail option)|