Add the configuration for the email.

lib/decentralised_book_index/accounts/user/senders/send_new_user_confirmation_email.ex

@@ -13,8 +13,7 @@ defmodule DecentralisedBookIndex.Accounts.User.Senders.SendNewUserConfirmationEm
   @impl true
   def send(user, token, _) do
     new()
-    # TODO: Replace with your email
-    |> from({"noreply", "noreply@example.com"})
+    |> from({"noreply", System.get_env("SYSTEM_EMAIL", "noreply@example.com")})
     |> to(to_string(user.email))
     |> subject("Confirm your email address")
     |> html_body(body(token: token))

lib/decentralised_book_index/accounts/user/senders/send_password_reset_email.ex

@@ -13,8 +13,7 @@ defmodule DecentralisedBookIndex.Accounts.User.Senders.SendPasswordResetEmail do
   @impl true
   def send(user, token, _) do
     new()
-    # TODO: Replace with your email
-    |> from({"noreply", "noreply@example.com"})
+    |> from({"noreply", System.get_env("SYSTEM_EMAIL", "noreply@example.com")})
     |> to(to_string(user.email))
     |> subject("Reset your password")
     |> html_body(body(token: token))