Return the email nodes, not just the node IDs

modules/opd_daily_emails/src/Collection/DailyEmailCollection.php

@@ -0,0 +1,24 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\opd_daily_emails\Collection;
+
+use Drupal\node\NodeInterface;
+
+final class DailyEmailCollection implements \Countable {
+
+  public function __construct(
+    private array $emails,
+  ) {
+  }
+
+  public function count(): int {
+    return count($this->emails);
+  }
+
+  public function first(): NodeInterface {
+    return array_values($this->emails)[0];
+  }
+
+}