Workaround expunged messages without deleted flag

app/src/main/java/com/sun/mail/imap/IMAPMessage.java

@@ -1697,4 +1697,28 @@ public class IMAPMessage extends MimeMessage implements ReadableMime {
     Session _getSession() {
 	return session;
     }
+
+	@Override
+	public boolean isExpunged() {
+		if (super.isExpunged())
+			return true;
+
+		// Workaround expunged messages without deleted flag
+		if (size == 0 &&
+				receivedDate != null &&
+				receivedDate.getTime() == 0 &&
+				envelope != null &&
+				envelope.date == null &&
+				envelope.subject == null &&
+				envelope.from == null &&
+				envelope.sender == null &&
+				envelope.replyTo == null &&
+				envelope.to == null &&
+				envelope.cc == null &&
+				envelope.inReplyTo == null &&
+				envelope.messageId == null)
+			return true;
+
+		return false;
+	}
 }

patches/JavaMail.patch

@@ -42,3 +42,36 @@ index 866f17737..929e82d33 100644
      /**
       * Set the user name to be used with the PROXYAUTH command.
       * The PROXYAUTH user name can also be set using the
+diff --git a/app/src/main/java/com/sun/mail/imap/IMAPMessage.java b/app/src/main/java/com/sun/mail/imap/IMAPMessage.java
+index 453479d98..29433351f 100644
+--- a/app/src/main/java/com/sun/mail/imap/IMAPMessage.java
++++ b/app/src/main/java/com/sun/mail/imap/IMAPMessage.java
+@@ -1697,4 +1697,28 @@ public class IMAPMessage extends MimeMessage implements ReadableMime {
+     Session _getSession() {
+ 	return session;
+     }
++
++	@Override
++	public boolean isExpunged() {
++		if (super.isExpunged())
++			return true;
++
++		// Workaround expunged messages without deleted flag
++		if (size == 0 &&
++				receivedDate != null &&
++				receivedDate.getTime() == 0 &&
++				envelope != null &&
++				envelope.date == null &&
++				envelope.subject == null &&
++				envelope.from == null &&
++				envelope.sender == null &&
++				envelope.replyTo == null &&
++				envelope.to == null &&
++				envelope.cc == null &&
++				envelope.inReplyTo == null &&
++				envelope.messageId == null)
++			return true;
++
++		return false;
++	}
+ }