diff --git a/lib/mix/tasks/mobilizon/users/delete.ex b/lib/mix/tasks/mobilizon/users/delete.ex
index 73d1e486..e6b9f20e 100644
--- a/lib/mix/tasks/mobilizon/users/delete.ex
+++ b/lib/mix/tasks/mobilizon/users/delete.ex
@@ -21,11 +21,13 @@ defmodule Mix.Tasks.Mobilizon.Users.Delete do
           all_matching_email_domain: :boolean,
           all_matching_ip: :boolean,
           include_groups_where_admin: :boolean,
+          keep_email: :boolean,
           help: :boolean
         ],
         aliases: [
-          y: :assume_yes,
-          h: :help
+          h: :help,
+          k: :keep_email,
+          y: :assume_yes
         ]
       )
 
@@ -156,7 +158,7 @@ defmodule Mix.Tasks.Mobilizon.Users.Delete do
              Delete.delete(actor, actor, true)
            end) do
       # Delete user
-      Users.delete_user(user, reserve_email: false)
+      Users.delete_user(user, reserve_email: Keyword.get(options, :keep_email, false))
     end
   end
 
@@ -191,6 +193,9 @@ defmodule Mix.Tasks.Mobilizon.Users.Delete do
       --all-matching-ip
               Delete all users matching the given input as email domain
 
+      -k/--keep-email
+              Keep a record of the email in the users table so that the email can't be used to register again
+
       -h/--help
               Show the help
 
diff --git a/test/tasks/users_test.exs b/test/tasks/users_test.exs
index 22d455fb..faf585b7 100644
--- a/test/tasks/users_test.exs
+++ b/test/tasks/users_test.exs
@@ -204,7 +204,7 @@ defmodule Mix.Tasks.Mobilizon.UsersTest do
     test "delete non-existing user" do
       Delete.run([@email, "-y"])
       assert_received {:mix_shell, :error, [message]}
-      assert message =~ "Error: No such user"
+      assert message == "No user with the email \"#{@email}\" was found"
     end
   end