diff --git a/extensions/mailer/runtime/src/main/java/io/quarkus/mailer/MailTemplate.java b/extensions/mailer/runtime/src/main/java/io/quarkus/mailer/MailTemplate.java
index 7b1785a36a4fe..c3807ea1190e9 100644
--- a/extensions/mailer/runtime/src/main/java/io/quarkus/mailer/MailTemplate.java
+++ b/extensions/mailer/runtime/src/main/java/io/quarkus/mailer/MailTemplate.java
@@ -56,6 +56,12 @@ interface MailTemplateInstance {
 
         MailTemplateInstance addInlineAttachment(String name, File file, String contentType, String contentId);
 
+        MailTemplateInstance addInlineAttachment(String name, byte[] data, String contentType, String contentId);
+
+        MailTemplateInstance addAttachment(String name, File file, String contentType);
+
+        MailTemplateInstance addAttachment(String name, byte[] data, String contentType);
+
         /**
          *
          * @param key
diff --git a/extensions/mailer/runtime/src/main/java/io/quarkus/mailer/runtime/MailTemplateInstanceImpl.java b/extensions/mailer/runtime/src/main/java/io/quarkus/mailer/runtime/MailTemplateInstanceImpl.java
index 83faa7f8562c6..546cd66ab12de 100644
--- a/extensions/mailer/runtime/src/main/java/io/quarkus/mailer/runtime/MailTemplateInstanceImpl.java
+++ b/extensions/mailer/runtime/src/main/java/io/quarkus/mailer/runtime/MailTemplateInstanceImpl.java
@@ -87,6 +87,24 @@ public MailTemplateInstance addInlineAttachment(String name, File file, String c
         return this;
     }
 
+    @Override
+    public MailTemplateInstance addInlineAttachment(String name, byte[] data, String contentType, String contentId) {
+        this.mail.addInlineAttachment(name, data, contentType, contentId);
+        return this;
+    }
+
+    @Override
+    public MailTemplateInstance addAttachment(String name, File file, String contentType) {
+        this.mail.addAttachment(name, file, contentType);
+        return this;
+    }
+
+    @Override
+    public MailTemplateInstance addAttachment(String name, byte[] data, String contentType) {
+        this.mail.addAttachment(name, data, contentType);
+        return this;
+    }
+
     @Override
     public MailTemplateInstance data(String key, Object value) {
         this.templateInstance.data(key, value);