diff --git a/src/main/java/edu/harvard/iq/dataverse/MailServiceBean.java b/src/main/java/edu/harvard/iq/dataverse/MailServiceBean.java
index 9513d061385..0e498445a7a 100644
--- a/src/main/java/edu/harvard/iq/dataverse/MailServiceBean.java
+++ b/src/main/java/edu/harvard/iq/dataverse/MailServiceBean.java
@@ -71,9 +71,7 @@ public class MailServiceBean implements java.io.Serializable {
     private static final Logger logger = Logger.getLogger(MailServiceBean.class.getCanonicalName());
 
     private static final String charset = "UTF-8";
-    private static final String EMAIL_PATTERN = "^[_A-Za-z0-9-\\+]+(\\.[_A-Za-z0-9-]+)*@"
-    + "[A-Za-z0-9-]+(\\.[A-Za-z0-9]+)*(\\.[A-Za-z]{2,})$";
-    
+
     /**
      * Creates a new instance of MailServiceBean
      */
@@ -111,7 +109,7 @@ public void sendMail(String host, String reply, String to, String subject, Strin
             me.printStackTrace(System.out);
         }
     }
-
+    
     @Resource(name = "mail/notifyMailSession")
     private Session session;
 
@@ -181,8 +179,7 @@ public void sendMail(String reply, String to, String subject, String messageText
                 logger.severe(ex.getMessage());
             }
             msg.setFrom(fromAddress);
-             
-            if (reply.matches(EMAIL_PATTERN)) {
+            if (EMailValidator.isEmailValid(reply, null)) {
             	//But set the reply-to address to direct replies to the requested 'from' party if it is a valid email address	
                 msg.setReplyTo(new Address[] {new InternetAddress(reply)});
             } else {
diff --git a/src/main/java/edu/harvard/iq/dataverse/util/StringUtil.java b/src/main/java/edu/harvard/iq/dataverse/util/StringUtil.java
index fd4656fa463..b4970fc3899 100644
--- a/src/main/java/edu/harvard/iq/dataverse/util/StringUtil.java
+++ b/src/main/java/edu/harvard/iq/dataverse/util/StringUtil.java
@@ -28,7 +28,6 @@
 public class StringUtil {
        
     private static final Logger logger = Logger.getLogger(StringUtil.class.getCanonicalName());
-    private static final Pattern EMAIL_PATTERN = Pattern.compile("^[_A-Za-z0-9-\\+]+(\\.[_A-Za-z0-9-]+)*@[A-Za-z0-9-]+(\\.[A-Za-z0-9]+)*(\\.[A-Za-z]{2,})$");
     
     public static final boolean nonEmpty( String str ) {
         return ! isEmpty(str);
@@ -61,18 +60,6 @@ public static Optional<String> toOption(String s) {
         return s.isEmpty() ? Optional.empty() : Optional.of(s);
     }
     
-    /**
-     * @todo Unless there is a compelling reason not to, we should switch to the
-     * validation routines in EMailValidator.
-     */
-    @Deprecated
-    public static boolean isValidEmail( String s ) {
-        logger.fine("Validating <<<" + s + ">>>.");
-        if (s == null) {
-            return false;
-        }
-        return EMAIL_PATTERN.matcher(s).matches();
-    }
     
     public static final boolean isAlphaNumericChar(char c) {
         // TODO: consider using Character.isLetterOrDigit(c)
diff --git a/src/test/java/edu/harvard/iq/dataverse/EMailValidatorTest.java b/src/test/java/edu/harvard/iq/dataverse/EMailValidatorTest.java
index 858e1b91b08..9b6c4bf8005 100644
--- a/src/test/java/edu/harvard/iq/dataverse/EMailValidatorTest.java
+++ b/src/test/java/edu/harvard/iq/dataverse/EMailValidatorTest.java
@@ -37,6 +37,12 @@ public void testIsEmailValid() {
         assertEquals(false, EMailValidator.isEmailValid("dora@.com", null));
         assertEquals(false, EMailValidator.isEmailValid("", null));
         assertEquals(false, EMailValidator.isEmailValid(null, null));
+        /*
+        Add tests for 4601
+        */
+        assertEquals(true, EMailValidator.isEmailValid("blah@wiso.uni-unc.de", null));
+        assertEquals(true, EMailValidator.isEmailValid("foo@essex.co.uk", null));
+        assertEquals(true, EMailValidator.isEmailValid("jack@bu.cloud", null));
     }
 
 }
diff --git a/src/test/java/edu/harvard/iq/dataverse/util/StringUtilTest.java b/src/test/java/edu/harvard/iq/dataverse/util/StringUtilTest.java
index 7fd154e9031..306e059af57 100644
--- a/src/test/java/edu/harvard/iq/dataverse/util/StringUtilTest.java
+++ b/src/test/java/edu/harvard/iq/dataverse/util/StringUtilTest.java
@@ -130,17 +130,5 @@ public void testSymmetricEncryption() {
         assertEquals(source, decrypted);
     }
     
-    @Test
-    public void testIsValidEmail() {
-        assertTrue( StringUtil.isValidEmail("hello@world.com") );
-        assertTrue( StringUtil.isValidEmail("hello@world.co.il") );
-        assertTrue( StringUtil.isValidEmail("hello@under.world.co.il") );
-        
-        assertFalse( StringUtil.isValidEmail("hello at under.world.co.il") );
-        assertFalse( StringUtil.isValidEmail("hellounder.world.co.il") );
-        assertFalse( StringUtil.isValidEmail("hellounder@.world.co.il") );
-        assertFalse( StringUtil.isValidEmail("hellounder") );
-        assertFalse( StringUtil.isValidEmail("") );
-        assertFalse( StringUtil.isValidEmail(null) );
-    }
+
 }