Reviews changes

Signed-off-by: Jorge Bescos Gascon <[email protected]>

Author: jbescos

api/src/main/java/jakarta/mail/internet/MimeMessage.java

@@ -2318,4 +2318,13 @@ protected MimeMessage createMimeMessage(Session session)
             throws MessagingException {
         return new MimeMessage(session);
     }
+
+    boolean isStrict() {
+        return strict;
+    }
+
+    boolean isAllowutf8() {
+        return allowutf8;
+    }
+
 }

api/src/test/java/jakarta/mail/internet/MimeMessageTest.java

@@ -0,0 +1,86 @@
+/*
+ * Copyright (c) 2025 Oracle and/or its affiliates. All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v. 2.0, which is available at
+ * http://www.eclipse.org/legal/epl-2.0.
+ *
+ * This Source Code may also be made available under the following Secondary
+ * Licenses when the conditions for such availability set forth in the
+ * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
+ * version 2 with the GNU Classpath Exception, which is available at
+ * https://www.gnu.org/software/classpath/license.html.
+ *
+ * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
+ */
+
+package jakarta.mail.internet;
+
+
+import static org.junit.Assert.assertEquals;
+
+import java.util.Properties;
+import jakarta.mail.Session;
+import org.junit.Test;
+
+/**
+ * Test the properties that control strict address parsing and UTF-8 support
+ */
+public class MimeMessageTest {
+
+    @Test
+    public void testDefaultProperties() throws Exception {
+        Session session = Session.getInstance(new Properties());
+        MimeMessage message = new MimeMessage(session);
+        assertEquals(true, message.isStrict());
+        assertEquals(false, message.isAllowutf8());
+    }
+
+    @Test
+    public void testSystemAndSession() throws Exception {
+        try {
+            System.setProperty("mail.mime.address.strict", Boolean.TRUE.toString());
+            System.setProperty("mail.mime.allowutf8", Boolean.FALSE.toString());
+            Properties properties = new Properties();
+            properties.setProperty("mail.mime.address.strict", Boolean.FALSE.toString());
+            properties.setProperty("mail.mime.allowutf8", Boolean.TRUE.toString());
+            Session session = Session.getInstance(properties);
+            MimeMessage message = new MimeMessage(session);
+            assertEquals(false, message.isStrict());
+            assertEquals(true, message.isAllowutf8());
+        } finally {
+            System.clearProperty("mail.mime.address.strict");
+            System.clearProperty("mail.mime.allowutf8");
+        }
+    }
+
+    @Test
+    public void testSystemPropertiesNoSession() throws Exception {
+        try {
+            System.setProperty("mail.mime.address.strict", Boolean.FALSE.toString());
+            System.setProperty("mail.mime.allowutf8", Boolean.TRUE.toString());
+            MimeMessage message = new MimeMessage((Session) null);
+            assertEquals(false, message.isStrict());
+            assertEquals(true, message.isAllowutf8());
+        } finally {
+            System.clearProperty("mail.mime.address.strict");
+            System.clearProperty("mail.mime.allowutf8");
+        }
+    }
+
+    @Test
+    public void testSystemPropertiesAndSessionWithNoProperties() throws Exception {
+        try {
+            System.setProperty("mail.mime.address.strict", Boolean.FALSE.toString());
+            System.setProperty("mail.mime.allowutf8", Boolean.TRUE.toString());
+            Session session = Session.getInstance(new Properties());
+            MimeMessage message = new MimeMessage(session);
+            // System properties are ignored when Session is present (even if empty)
+            assertEquals(true, message.isStrict());
+            assertEquals(false, message.isAllowutf8());
+        } finally {
+            System.clearProperty("mail.mime.address.strict");
+            System.clearProperty("mail.mime.allowutf8");
+        }
+    }
+}

doc/release/CHANGES.txt

@@ -22,6 +22,7 @@ longer available.
       CHANGES IN THE 2.1.5 RELEASE
       ----------------------------
 E  752 Inconsistent MailMessage contentId property
+E  758 Improve MimeMessage UTF8 handling
 E  789 Only one META-INF/javamail.providers resource file is processed
 
       CHANGES IN THE 2.1.4 RELEASE