Fixes: - [Need to change modile info file](https://www.drupal.org/project/send_emails/issues/3306142) - [array_column causes an error](https://www.drupal.org/project/send_emails/issues/3336431) - [$startsWith should be changed to $starts_with](https://www.drupal.org/project/send_emails/issues/3336443) - [Capitalize the Email Headers](https://www.drupal.org/project/send_emails/issues/3358640) - [Phpcs coding standard drupal issues](https://www.drupal.org/project/send_emails/issues/3335085)