I'm using exact e-mail addresses in this area.
First question: Is there a limit to the number of e-mail addresses you can put in this area of the script and/or form? I have about 100.
Second question: Do I have to put each individual address in both the formmail.php file and the form file? I assume so.
Third question: Some of the e-mail addresses I'm using have more than one 'dot' after the 'at' symbol. Example: me.co.zw or public.lib.in.us. Do I need to use the '\' symbol after each dot or just after the one after the 'at' symbol? Which is right and/or more secure?

me@public\.lib.in.us or me@public\.lib\.in\.us

Let me know. Thanks.