Here's the part that reads the emails into an array and sends them out. Thanks for the help.
// These variables read the email list.
// Set filename of email list.
$emaillist = "emailList.txt";
// Read file into array.
$recipients = file ($emaillist);
// Count the number of email addresses.
$emails = count ($recipients);
// Go through lines and send message to each email.
for ($i=0; $i<$emails; $i++) {
mail ($recipients[$i], $subject . " Messageboard", $message, "From: $name\r\nReply-to: $email\r\n");
}