diff --git a/source/Gui/ActivateUserDialog.cpp b/source/Gui/ActivateUserDialog.cpp
index 63c0821e5..b24d37a2e 100644
--- a/source/Gui/ActivateUserDialog.cpp
+++ b/source/Gui/ActivateUserDialog.cpp
@@ -24,6 +24,9 @@ void _ActivateUserDialog::process()
     ImGui::OpenPopup("Activate user");
     if (ImGui::BeginPopupModal("Activate user", NULL, ImGuiWindowFlags_None)) {
         AlienImGui::Text("Please enter the confirmation code sent to your email address.");
+        AlienImGui::HelpMarker(
+            "Please check your spam folder if you did not find an email. If you did not receive an email there, try signing up with possibly another "
+            "email address. If this still does not work, please contact info@alien-project.org.");
         AlienImGui::Separator();
         AlienImGui::InputText(AlienImGui::InputTextParameters().hint("Code (case sensitive)").textWidth(0), _confirmationCode);