diff --git a/UI/Templates/MailerUI/UIxMailEditor.wox b/UI/Templates/MailerUI/UIxMailEditor.wox
index 588ae14ab..6221e260e 100644
--- a/UI/Templates/MailerUI/UIxMailEditor.wox
+++ b/UI/Templates/MailerUI/UIxMailEditor.wox
@@ -21,7 +21,8 @@
           </md-select>
         </md-input-container>
         <div flex-gt-sm="flex-gt-sm"><!-- spacer --></div>
-        <md-button class="sg-icon-button" ng-click="editor.send()">
+        <md-button class="sg-icon-button" ng-click="editor.send()"
+                   ng-disabled="!(editor.message.editable.to.length > 0 || editor.message.editable.cc.length > 0 || editor.message.editable.bcc.length > 0)">
           <md-icon>send</md-icon>
         </md-button>
         <md-button class="sg-icon-button" ng-click="editor.message.$save()">