diff --git a/lib/plausible/site/spike_notification.ex b/lib/plausible/site/spike_notification.ex
index c37692da23ac..0c0453c32dd3 100644
--- a/lib/plausible/site/spike_notification.ex
+++ b/lib/plausible/site/spike_notification.ex
@@ -6,6 +6,7 @@ defmodule Plausible.Site.SpikeNotification do
     field :recipients, {:array, :string}
     field :threshold, :integer
     field :last_sent, :naive_datetime
+    field :type, Ecto.Enum, values: [:spike, :drop], default: :spike
     belongs_to :site, Plausible.Site
 
     timestamps()
@@ -15,7 +16,7 @@ defmodule Plausible.Site.SpikeNotification do
     schema
     |> cast(attrs, [:site_id, :recipients, :threshold])
     |> validate_required([:site_id, :recipients, :threshold])
-    |> unique_constraint(:site_id)
+    |> unique_constraint([:site_id, :type])
   end
 
   def add_recipient(schema, recipient) do
diff --git a/priv/repo/migrations/20240702055817_traffic_drop_notifications.exs b/priv/repo/migrations/20240702055817_traffic_drop_notifications.exs
new file mode 100644
index 000000000000..d0ed53effb96
--- /dev/null
+++ b/priv/repo/migrations/20240702055817_traffic_drop_notifications.exs
@@ -0,0 +1,13 @@
+defmodule Plausible.Repo.Migrations.TrafficDropNotifications do
+  use Ecto.Migration
+
+  def change do
+    drop index(:spike_notifications, [:site_id])
+
+    alter table(:spike_notifications) do
+      add :type, :string, default: "spike"
+    end
+
+    create unique_index(:spike_notifications, [:site_id, :type])
+  end
+end