Make it possible to bulk send confirmation emails to all unconfirmed users

lib/mix/tasks/pleroma/email.ex

@@ -2,7 +2,7 @@ defmodule Mix.Tasks.Pleroma.Email do
   use Mix.Task
   import Mix.Pleroma
 
-  @shortdoc "Simple Email test"
+  @shortdoc "Email administrative tasks"
   @moduledoc File.read!("docs/administration/CLI_tasks/email.md")
 
   def run(["test" | args]) do
@@ -21,4 +21,21 @@ defmodule Mix.Tasks.Pleroma.Email do
 
     shell_info("Test email has been sent to #{inspect(email.to)} from #{inspect(email.from)}")
   end
+
+  def run(["resend_confirmation_emails"]) do
+    start_pleroma()
+
+    Pleroma.User.Query.build(%{
+      local: true,
+      deactivated: false,
+      confirmation_pending: true,
+      invisible: false
+    })
+    |> Pleroma.RepoStreamer.chunk_stream(500)
+    |> Stream.each(fn users ->
+      users
+      |> Enum.each(fn user -> Pleroma.User.send_confirmation_email(user) end)
+    end)
+    |> Stream.run()
+  end
 end