diff --git a/server/notification-providers/smtp.js b/server/notification-providers/smtp.js
index 9f3defa5e..35d714f0c 100644
--- a/server/notification-providers/smtp.js
+++ b/server/notification-providers/smtp.js
@@ -44,6 +44,7 @@ class SMTP extends NotificationProvider {
         // default values in case the user does not want to template
         let subject = msg;
         let body = msg;
+        let use_html_body = false
         if (heartbeatJSON) {
             body = `${msg}\nTime (${heartbeatJSON["timezone"]}): ${heartbeatJSON["localDateTime"]}`;
         }
@@ -52,7 +53,7 @@ class SMTP extends NotificationProvider {
             // cannot end with whitespace as this often raises spam scores
             const customSubject = notification.customSubject?.trim() || "";
             const customBody = notification.customBody?.trim() || "";
-
+            use_html_body = notification.htmlBody || false
             const context = this.generateContext(msg, monitorJSON, heartbeatJSON);
             const engine = new Liquid();
             if (customSubject !== "") {
@@ -73,7 +74,7 @@ class SMTP extends NotificationProvider {
             bcc: notification.smtpBCC,
             to: notification.smtpTo,
             subject: subject,
-            text: body,
+            [htmlBody ? 'html' : 'text']: body
         });
 
         return okMsg;