Make sure to show intro to user only once

app/dashboard/templates/dashboard/index.html

@@ -346,15 +346,12 @@
   <script>
     var clipboard = new ClipboardJS('.clipboard');
 
-    var introShown = store.get("introShown");
-    if ("yes" !== introShown) {
+    {% if show_intro %}
       // only show intro when screen is big enough to show "developer" tab
       if (window.innerWidth >= 1024) {
         introJs().start();
-        store.set("introShown", "yes")
       }
-    }
-
+    {% endif %}
 
     $(".delete-email").on("click", function (e) {
       let alias = $(this).parent().find(".alias").val();

app/dashboard/views/index.py

@@ -175,6 +175,15 @@ def index():
 
     mailboxes = current_user.mailboxes()
 
+    show_intro = False
+    if not current_user.intro_shown:
+        LOG.d("Show intro to %s", current_user)
+        show_intro = True
+
+        # to make sure not showing intro to user again
+        current_user.intro_shown = True
+        db.session.commit()
+
     return render_template(
         "dashboard/index.html",
         client_users=client_users,
@@ -183,6 +192,7 @@ def index():
         query=query,
         AliasGeneratorEnum=AliasGeneratorEnum,
         mailboxes=mailboxes,
+        show_intro=show_intro,
     )