Here is a summary of the provided text in one paragraph: Email remains one of the most widely used and trusted methods of communication, with an estimated 333 billion emails sent in 2022. Despite the rise of social media, email offers a personal and reliable way to reach recipients. To send emails with PHP, you can use three different approaches: using PHP's built-in `mail()` function, Symfony Mailer component, or SendGrid's API Library. Each approach has its own strengths and weaknesses, and choosing the right one depends on your specific needs and requirements. By understanding how to debug email-sending problems and troubleshoot issues, you can ensure that your emails are delivered successfully and efficiently.