diff --git a/README.md b/README.md
index 822e3de..39132b1 100644
--- a/README.md
+++ b/README.md
@@ -134,6 +134,7 @@ Click **"Auto Discovery Test"** to automatically test all common port and encryp
 | **SendGrid** | smtp.sendgrid.net | 587 | STARTTLS |
 | **Mailgun** | smtp.mailgun.org | 587 | STARTTLS |
 | **Amazon SES** | email-smtp.us-east-1.amazonaws.com | 587 | STARTTLS |
+| **Mail Assure** | smtpout.mtaroutes.com | 587 | STARTTLS |
 
 ---
 
diff --git a/index.html b/index.html
index aa5dc95..f24b48a 100644
--- a/index.html
+++ b/index.html
@@ -74,6 +74,7 @@
                 <option value="sendgrid">SendGrid</option>
                 <option value="mailgun">Mailgun</option>
                 <option value="amazonses">Amazon SES</option>
+                <option value="mailassure">Mail Assure</option>
                 <option value="custom">💾 Last Used Configuration</option>
               </select>
             </div>
diff --git a/public/script.js b/public/script.js
index 564192f..b4185c8 100644
--- a/public/script.js
+++ b/public/script.js
@@ -34,6 +34,12 @@ const PRESETS = {
         port: '587',
         secure: 'false',
         name: 'Amazon SES'
+    },
+    mailassure: {
+        host: 'smtpout.mtaroutes.com',
+        port: '587',
+        secure: 'false',
+        name: 'Mail Assure'
     }
 };