Refactoring

app/src/main/java/eu/faircode/email/Core.java

@@ -3143,11 +3143,7 @@ class Core {
                         }
 
                         Long sent = helper.getSent();
-                        Long received = helper.getReceivedHeader(helper.getResent());
+                        long received = helper.getPOP3Received();
-                        if (received == null)
-                            received = sent;
-                        if (received == null)
-                            received = 0L;
 
                         boolean seen = (received <= account.created);
                         EntityLog.log(context, account.name + " POP sync=" + uidl + "/" + msgid +

app/src/main/java/eu/faircode/email/MessageHelper.java

@@ -2509,7 +2509,16 @@ public class MessageHelper {
         return getReceivedHeader(null);
     }
 
-    Long getReceivedHeader(Long before) throws MessagingException {
+    long getPOP3Received() throws MessagingException {
+        Long received = getReceivedHeader(getResent());
+        if (received == null)
+            received = getSent();
+        if (received == null)
+            received = 0L;
+        return received;
+    }
+
+    private Long getReceivedHeader(Long before) throws MessagingException {
         ensureHeaders();
 
         // https://tools.ietf.org/html/rfc5321#section-4.4