Compare email address only of submitter

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

@@ -2163,7 +2163,7 @@ class Core {
                         message.ui_ignored = false;
                         message.ui_browsed = false;
 
-                        if (MessageHelper.equal(message.submitter, message.from))
+                        if (MessageHelper.equalEmail(message.submitter, message.from))
                             message.submitter = null;
 
                         if (message.size == null && message.total != null)
@@ -2863,7 +2863,7 @@ class Core {
             if (message.flagged)
                 message.color = color;
 
-            if (MessageHelper.equal(message.submitter, message.from))
+            if (MessageHelper.equalEmail(message.submitter, message.from))
                 message.submitter = null;
 
             // Borrow reply name from sender name

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

@@ -2707,6 +2707,23 @@ public class MessageHelper {
         return Objects.equals(email1, email2);
     }
 
+    static boolean equalEmail(Address[] a1, Address[] a2) {
+        if (a1 == null && a2 == null)
+            return true;
+
+        if (a1 == null || a2 == null)
+            return false;
+
+        if (a1.length != a2.length)
+            return false;
+
+        for (int i = 0; i < a1.length; i++)
+            if (!equalEmail(a1[i], a2[i]))
+                return false;
+
+        return true;
+    }
+
     static boolean equal(Address[] a1, Address[] a2) {
         if (a1 == null && a2 == null)
             return true;