first milestone:

We are sucessfully receiving push mails and sending notifications upon receiving emails.
Next step:
Enable Online configuration

src/main/java/de/srsoftware/widerhall/Constants.java

@@ -6,4 +6,5 @@ public class Constants {
     public static final String HOST = "host";
     public static final String USER = "user";
     public static final String PASSWORD = "password";
+    public static final String INBOX = "inbox";
 }