If you simply want to send batched emails then yes you can just e-mail them using a CC but if you really want it scripted then I'd just create PHP script and use an array to hold all the player's email addresses then call the php mail() function.
Personally for 15 end users I wouldn't bother, create a distribution group or something.
your knowelge lol
just to tell you that if you host provide is free probally the mail function will be disabled and paid may limite you to so may emails
though with only 15 i dont think you will have a problem lol