diff --git a/ghost/admin/app/components/gh-post-settings-menu/email.js b/ghost/admin/app/components/gh-post-settings-menu/email.js
index <HASH>..<HASH> 100644
--- a/ghost/admin/app/components/gh-post-settings-menu/email.js
+++ b/ghost/admin/app/components/gh-post-settings-menu/email.js
@@ -84,7 +84,7 @@ export default Component.extend({
             return yield this.ajax.post(url, options);
         } catch (error) {
             if (error) {
-                this.notifications.showAPIError(error, {key: 'send.previewEmail'});
+                this.set('sendTestEmailError', 'Error sending mail, please check your mailgun config');
             }
         }
     }).drop()
Updated send test mail error for mailgun

no issue