diff --git a/simple-mail/pom.xml b/simple-mail/pom.xml
index dfe2aaeb..a7a0a4b6 100644
--- a/simple-mail/pom.xml
+++ b/simple-mail/pom.xml
@@ -21,7 +21,7 @@
         <dependency>
             <groupId>org.simplejavamail</groupId>
             <artifactId>simple-java-mail</artifactId>
-            <version>8.12.6</version>
+            <version>9.1.0</version>
         </dependency>
     </dependencies>
 </project>
diff --git a/simple-mail/src/main/java/com/metaxiii/fr/model/SimpleMail.java b/simple-mail/src/main/java/com/metaxiii/fr/model/SimpleMail.java
index b85be8b2..3e7efebd 100644
--- a/simple-mail/src/main/java/com/metaxiii/fr/model/SimpleMail.java
+++ b/simple-mail/src/main/java/com/metaxiii/fr/model/SimpleMail.java
@@ -2,6 +2,8 @@
 
 import jakarta.activation.FileDataSource;
 import jakarta.mail.Message;
+
+import java.security.cert.X509Certificate;
 import java.util.ArrayList;
 import java.util.List;
 import lombok.extern.slf4j.Slf4j;
@@ -19,6 +21,7 @@ public class SimpleMail {
 
   private static final String RECIPIENT_EXAMPLE_COM = "recipient@example.com";
   private static final String SENDER_EXAMPLE_COM = "sender@example.com";
+  private static final X509Certificate x509Certificate = null;
 
   private SimpleMail() throws IllegalAccessException {
     throw new IllegalAccessException("You should not create this class");
@@ -45,7 +48,7 @@ public static void sendPlainTextEmail() {
     final Email email =
         EmailBuilder.startingBlank()
             .from(SENDER_EXAMPLE_COM)
-            .to(RECIPIENT_EXAMPLE_COM)
+            .withReturnReceiptTo(RECIPIENT_EXAMPLE_COM)
             .withSubject("Email with Plain Text!")
             .withPlainText("This is a test email sent using SJM.")
             .buildEmail();
@@ -79,7 +82,7 @@ public static void sendEmailWithAttachment() {
     final Email email =
         EmailBuilder.startingBlank()
             .from(SENDER_EXAMPLE_COM)
-            .to(RECIPIENT_EXAMPLE_COM)
+            .withReturnReceiptTo(RECIPIENT_EXAMPLE_COM)
             .withSubject("Email with Plain Text and Attachment!")
             .withPlainText("This is a test email with attachment sent using SJM.")
             .withAttachment(
@@ -89,16 +92,17 @@ public static void sendEmailWithAttachment() {
   }
 
   private static void sendEmailWithDeliveryReadRecipient() {
+
     final Email email =
         EmailBuilder.startingBlank()
             .from(SENDER_EXAMPLE_COM)
-            .to(RECIPIENT_EXAMPLE_COM)
+            .withReturnReceiptTo(RECIPIENT_EXAMPLE_COM)
             .withSubject("Email with Delivery/Read Receipt Configured!")
             .withPlainText("This is an email sending with delivery/read receipt.")
             .withDispositionNotificationTo(
-                new Recipient("name", "address@domain.com", Message.RecipientType.TO))
+                new Recipient("name", "address@domain.com", Message.RecipientType.TO, x509Certificate ))
             .withReturnReceiptTo(
-                new Recipient("name", "address@domain.com", Message.RecipientType.TO))
+                new Recipient("name", "address@domain.com", Message.RecipientType.TO, x509Certificate))
             .buildEmail();
 
     sendEmail(email);
@@ -114,7 +118,7 @@ public static void sendEmailWithMultipleAttachment() {
     final Email email =
         EmailBuilder.startingBlank()
             .from(SENDER_EXAMPLE_COM)
-            .to(RECIPIENT_EXAMPLE_COM)
+            .withReturnReceiptTo(RECIPIENT_EXAMPLE_COM)
             .withSubject("Email with Plain Text and multiple Attachments!")
             .withPlainText("This is a test email with attachment sent using SJM.")
             .withAttachments(arList)
@@ -131,7 +135,7 @@ public static void sendHTMLTextWithEmbeddedImageEmail() {
     final Email email =
         EmailBuilder.startingBlank()
             .from(SENDER_EXAMPLE_COM)
-            .to(RECIPIENT_EXAMPLE_COM)
+            .withReturnReceiptTo(RECIPIENT_EXAMPLE_COM)
             .withSubject("Email with HTML and Embedded Image!")
             .withHTMLText(htmlContent)
             .withEmbeddedImage("company_logo", new FileDataSource("path/to/company_logo.png"))
@@ -143,7 +147,7 @@ public static void sendPlainTextEmailToMultipleRecipient() {
     final Email email =
         EmailBuilder.startingBlank()
             .from(SENDER_EXAMPLE_COM)
-            .to("recipient1@example.com, recipient2@example.com, recipient3@example.com")
+            .withReturnReceiptTo("recipient1@example.com, recipient2@example.com, recipient3@example.com")
             .withSubject("Email with Plain Text!")
             .withPlainText("This is a test email sent using SJM to multiple recipients.")
             .buildEmail();
@@ -154,7 +158,7 @@ public static void setCustomHeaderWhenSendingEmail() {
     final Email email =
         EmailBuilder.startingBlank()
             .from(SENDER_EXAMPLE_COM)
-            .to(RECIPIENT_EXAMPLE_COM)
+            .withReturnReceiptTo(RECIPIENT_EXAMPLE_COM)
             .withSubject("Email with Custom Header")
             .withPlainText("This is an important message.")
             .withHeader("X-Priority", "1")