Add option to not send no new mail message on join.

Essentials/src/com/earth2me/essentials/EssentialsPlayerListener.java

@@ -254,7 +254,9 @@ public class EssentialsPlayerListener implements Listener {
                 if (!ess.getSettings().isCommandDisabled("mail") && user.isAuthorized("essentials.mail")) {
                     final List<String> mail = user.getMails();
                     if (mail.isEmpty()) {
-                        user.sendMessage(tl("noNewMail"));
+                        if(ess.getSettings().isNotifyNoNewMail()) {
+                            user.sendMessage(tl("noNewMail")); // Only notify if they want us to.
+                        }
                     } else {
                         user.sendMessage(tl("youHaveNewMail", mail.size()));
                     }

Essentials/src/com/earth2me/essentials/ISettings.java

@@ -215,4 +215,6 @@ public interface ISettings extends IConf {
     boolean isCustomQuitMessage();
 
     String getCustomQuitMessage();
+
+    boolean isNotifyNoNewMail();
 }

Essentials/src/com/earth2me/essentials/Settings.java

@@ -1056,6 +1056,11 @@ public class Settings implements net.ess3.api.ISettings {
         return isCustomQuitMessage;
     }
 
+    @Override
+    public boolean isNotifyNoNewMail() {
+        return config.getBoolean("notify-no-new-mail", true);
+    }
+
     // #easteregg
     @Override
     public int getMaxUserCacheCount() {

Essentials/src/config.yml

@@ -86,6 +86,10 @@ spawnmob-limit: 10
 # Shall we notify users when using /lightning?
 warn-on-smite: true
 
+# Essentials Mail Notification
+# Should we notify players if they have no new mail?
+notify-no-new-mail: true
+
 # The motd and rules are now configured in the files motd.txt and rules.txt.
 
 # When a command conflicts with another plugin, by default, Essentials will try to force the OTHER plugin to take priority.